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Will Ketones Decide The Tour de France? | GCN Show Ep. 341

Will Ketones Decide The Tour de France? | GCN Show Ep. 341

– I’m at the top of North
Twin Cone Peak in Colorado. Welcome to The GCN Show. – Welcome to The GCN Show,
brought to you by Wiggle. – Coming up this week,
are ketones a magic bullet influencing the Tour de France this year? GCN investigates. – We do indeed. Also, the pro cycling transfer rumor mill is now in full swing, and we’re going to announce
the very, very lucky winner of a personalized Orbea Orca Aero. (upbeat music) This week in the world of cycling, we learned that Marianne Vos
is back to being the boss. – Yeah, she won La Course last week with a devastating late attack. In the process, she covered
a very tricky final kilometer just two seconds slower than Julian Alaphilippe did later that day whilst riding a time trial bike to victory and having only covered 27.5 kilometers. – [Dan] Not only that, she
was also seven seconds faster than Geraint Thomas
over that same distance. – [Simon] Yeah. – [Dan] We also learnt last week that being at the back
of the Tour de France can be just as hard as being at the front. – Yeah, this is something you
probably knew already, Dan. But anyway, we were reminded last week as Jens Debusschere crossed the finish line on the Col du Tourmalet second from last, absolutely spent. – [Dan] We also learned that
the stupid Tour de France rules that we discussed on the show last week are not, of course, confined
to the Tour de France. This is a tweet from top
pro, Christine Majerus. “UCI commissionaire
made me lower my socks” “by one centimeter today. “No wonder my prologue was (beeping).” (laughing) – Right, now, at the
Tour de France this year, one story has been bubbling
away almost since the start, and that is as to whether or not ketones, a nutritional supplement, are so effective, they’re actually shaping
the outcome of the race. – Yes, and to find out,
we’re going to head over to our registered nutritional expert. – Who is that, by the way? – [Dan] Hank. – Oh, I’m ready to go. – [Sam] Really? – [Dan] Of course not. Going to go over to Dr. Oliver Bridgewood. – Ah. – Thanks, guys. Well, firstly, we need
to define what they are, so here is a quick science lesson. Ketones, or to be specific, ketone bodies, are produced naturally inside the body and are a form of fuel
that the body can utilize. They consist of three molecules, acetone, acetoacetic acid,
and beta hydroxybutyrate, although technically speaking, only the first two are ketones. The third is the conjugate base of beta-hydroxybutyric acid. It’s technically a carboxylic acid. But you don’t need to worry about that. (snoring) These compounds are created by the body by breaking down fatty acids in the liver, and this occurs when you have
low levels of carbohydrate or an absence of carbohydrate. Examples of this situation would be if you were bonking on the bike, if you were engaging in a ketogenic diet, which is low carb, high fat, or if you were fasting or starving. It’s the body’s natural coping mechanism for when you don’t have much carbohydrate, which is its primary fuel source. Got that? (snoring) So rather than waiting for
the body to start making this alternative fuel,
these ketone bodies, the idea behind ketone drinks is to just give you the
ketones straight away. It’s called exogenous ketones, in the same way that technically speaking, when you take a gel or some carbohydrate and eat that on a ride, that’s technically called
exogenous carbohydrates. Consuming exogenous carbohydrate is key to endurance exercise performance but the amount that your body can take in and process is limited to roughly 1.8 grams per minute, if the correct ratio of
sucrose and fructose is used, and that is where is where
exogenous ketones come in. The theory is that you can provide an additional fuel source to the body, in addition
to the carbohydrate. Now, the difference is that the body will burn
carbohydrate in the really intense parts of the race, so attacking, the final climb, sprinting, things like that. But, a typical stage of the Tour de France is not always super
intense for the pro riders. If they’re on the flat and they’re sat in the bunch or a quieter moment in the race, they can often only
doing around 100 watts, and at this intensity, the body will happily
tick along on ketones, meaning that when they
get to that crucial, important moment of the race, they’ve been able to save their carbs or glycogen stores to use then. Think of it like a hybrid car, where you’ve got an electric motor paired with a petrol motor, gasoline, if you’re American. Now, if we take for
example, a Toyota Prius, then you use the electric motor when you want to make
the car more efficient and at lower intensities, when
you’re just ticking along. But if you need to step on it, and put the hammer down, then the petrol motor kicks
in to help you accelerate. Now, I have to stress that this is a gross oversimplification of what’s actually
believed to be happening, but hopefully, you get the idea. Some scientists suggest that there are potential recovery benefits to taking ketones as well. A study published in the
Journal of Medicine and Science for Sports and Exercise,
showed that taking ketones after exercise increased
muscle glycogen synthesis. Now, what this means
in non-science speak is the fuel stores inside your muscles are getting replenished with carbohydrate, now this is crucial to recovery, and is especially important
in refilling those fuel stores in the event
like the Tour de France, where you’ve got a race
day after day after day. But are ketones the magic
bullet that some people are making them out to be? Well, the current science would suggest, although there is likely some benefit, no, they’re not. A study by Cox et al in the Journal of Cell Metabolism, took 39 competitive cyclists and looked at their
time trial performance. They were given both
carbohydrates and ketones, and the result was a modest, 2% percent improvement in
time trial performance. Now to put this into context, even if I took ketones,
I wouldn’t be good enough to be in the Tour de France. And even in his prime, if Dan Lloyd, when he was riding for the, what was it? Sevello Test Team, took ketones, then he still wouldn’t have graduated to the podium, he might’ve come a bit higher than a 161st,
which is where he came. – That’s harsh. – It’s probably fair. – Either way, it would’ve been dependent on Lloydy actually being
able to drink this stuff, and this is no exaggeration,
it’s reported to taste like nail polish remover, and it may cause
gastro-intestinal distress. (gags) Grandma’s pants! Another study, published
in Frontiers of Physiology, reported that ketones
impaired the performance of world tour professional cyclists in a time trial. The participants in the
study took, on average, a minute longer to complete
a 31 kilometer time trial. Now, the results of this
were put down to potentially the aforementioned
gastro-intestinal issues, but it should also be
noted, that in this study, a different ketone supplement was used than the one that was
used in the Cox study. Although, going back to an earlier point, ketones may not be the best
application in a max out, time trial effort, they could
be better in those longer, stage race scenarios,
where there are points in the race where you are going easier, and then able to save the carbohydrates for when you really need them. But, there just haven’t
been enough studies into exogenous ketone supplementation to draw any, solid conclusions. More research is required and there haven’t enough studies into elite athletes
either, these highly tuned, extremely talented individuals, often respond differently. This is not to say that exogenous ketones are not being taken at the Tour de France, a couple of teams have said that they are, and it’s also not to say
that they’re not helping, but we asked a couple
of top nutritionists, who work with the teams, and
they both said the same thing, “The effect is being greatly exaggerated.” Back to the studio. – Food for though there. Cheers Ollie. – I see what you did there. Right, next up, we’ve been sent a dispatch by Mark Beaumont this week, which focuses on his two main passions, ultra endurance, and utterly bonkers. – I thought I’d do a little bit of impromptu reporting. I’ve been at the National
Cross Country Mountain Bike Champs all day today, which was amazing, and the guy holding my
phone is Alex Glasgow. He came 3rd in his age group. But the reason that I’ve
stopped here in Knutsford in East Cheshire is because
another buddy of mine, Richard Thoday, should, if his tracker’s anything to believe,
come around that corner in the next couple of minutes, on a penny-farthing. Now back in 1886, G.P
Mills, I think a teenager, allegedly rode from Land’s
End to John o’Groats, in five days, one hour, and 45 minutes. There was no tarmacked roads. And while Land’s End, John
o’ Groats in five days is insanely impressive by anyone, doing it on one of these contraptions, is pretty hard to get your head around. Nobody has come close to
that in the last decade plus. Six o’clock yesterday morning,
Richard left from Land’s End and on day one made 175 miles. Well, we’re coming up to 7
o’clock on his second day. (claps) Go on that, man! You want to keep going? – No, come on, I’ve just
come to say hello to you. – Oh, what a hero, what an absolute hero. – Come here, good man.
– How you doing buddy? – I’m doing great, man, how are you? – I’m great. You look like you’re having a good time. – Yeah, I am actually. You get little dips, don’t you, but generally, it’s been fantastic, yeah. – Superb, have you had
some good roadside support? – Brilliant today, ’cause
it’s kind of near home turf, so there’s been a lot of people out, just saw a lot of people
just back at the road. – [Mark] Day one smashed out, how far? – Just under 200. – Just under 200 miles yesterday? – Schedule was for 170, I think. – Right.
– But going well. (speaking drowned out by car driving past) – There in Cornwall. – It’s brutal. – It’s not a place to
ride a penny-farthing. – It’s not.
– It’s a scary place to be. – It’s hard on any bicycle. – But, there’s nothing to interrupt you. – Yeah. – So you just keep going. Well today, in theory, I
should’ve been faster today because it’s flatter, but
there are so many junctions and traffic lights and
town centers and stuff, it just slows you down. – Were the any hills yesterday you just had to walk the bike up? – No, no, didn’t walk. The worst one is up to
Bristol Airport, A38, it’s a real beast of a climb up to that. Blow right to the end before
you drop down to Bristol where we were stopping. That was a bit of a… But I get a bit, I get a bit belligerent. I should’ve really got off and walked to save my legs, but I
would’ve been much slower. – I’ve been watching closely with all the social media updates, and there’s a massive amount of people tuning into this and following
every update on the tracker, so yeah, staggering stuff, I love it. – [Richard] At the moment,
it’s going to plan. – [Mark] Well don’t, don’t give up too much time for us. Honestly, you’ve smashed it. – (laughs) Okay. – We recently launched a new collection on the GCN shop, which is
going very well indeed, but would you believe it,
we’ve got another one, a super cool new design, haven’t we Dan? – [Dan] We have our new fan kit. This is called the Strive
Collection, check those out. So you can use that whilst
you getting the miles under your belt, in the
nice warm summer sunshine, and it also has the base layer too. – Not only that, we’ve
got some casual clothing to match it. So this is what you can put on afterwards, after you’ve had your
shower, when you’re relaxing after those hard miles, sipping on a mineral water or two. – That’s right. You don’t want to know what else we got, under this desk by the way, that we’re just about to
pull out and show you guys, but anyway. This cycling kit is available in both men’s and women’s fit, and it’s all available on
the GCN shop right now. – Yeah, there’s a link to
that in the description below. (upbeat music) Next up, it is of course,
your weekly GCN inspiration, which is your chance to submit photos, and potentially win one of
three Wiggle voucher amounts. If you get third place on the day, you’ll get 50 pounds of vouchers, second place will get you
75, and the winner each week, will pick up 100 pounds
of vouchers, to do with, whatever they want on
the Wiggle online shop. – Nice, now rounding out
our podium in third place, we’ve got this sent in from David, from Lyttelton, New Zealand. He said, “Treated myself to a Cervelo R5 “before emigrating to New Zealand. “Fast forward five months,
eagerly awaiting shipment “from the UK, the bike
arrived for its first ride, “and it didn’t disappoint.” That’s a cool photo as well, isn’t it? I love that whole first ride anticipation of your super bike, plus a mint place. – [Dan] You also treated yourself to going to New Zealand really not just the R5, that looks magnificent. – [Simon] Sounds like a
double win, doesn’t it? – In second place, we had
this one in form Mack, in Reno in Nevada. One of my favorite local gravel roads and the perfect early
summer day for a great ride. – [Simon] It does look good, doesn’t it? – [Dan] It does look very good indeed. Well done to you Mack,
£75 on its way to you. But this is our winner. – [Simon] That’s right,
this was sent in by Natasha, taken from, now Natasha has
written, Lake Minnewanks, in the Canadian Rockies in Alberta. We did Google this, didn’t we Dan? – [Dan] We did yeah, and it turns out there was a slight spelling mistake, but she wasn’t trying to fool us, because actually the place
is called Lake Minnewanka over in the Canadian Rockies. Regardless, that is a
fantastic photo isn’t it? – It is indeed, it looks amazing, I definitely want to go there. It’s a nice view, I think
that looks like a nice place to go as well being a great place to take a picture in front a sign post. – Yeah.
– Share one for the Instagram profile, no doubt. – Well done to all of you. (upbeat trumpet music) – It’s now time for cycling shorts. – Cycling shorts now, and seeing as we are two thirds of the way through,
perhaps the most exciting Tour de France in decades, we
are dedicating this segment almost exclusively to that. A quick heads up, if you
want even more snippets from there, then make sure
you check out Lloydy’s racing news show from yesterday. – Yeah, please do. First up is news that
fans are still booing Team Ineos, and more specifically
than that, Geraint Thomas. – Yeah, so this is a tweet
from the Jumbo-Visma rider, George Bennett, and to paraphrase it, he basically says, how
disappointing it is, that so called fans of the sport are still acting in this way. – Yeah, it is disappointing, although I can’t help
but think and wonder, whether President Emmanuel Macron is also a guilty party in this. – Really, how so? – Well, I saw these photos
from the finish line. Want to see them? – Yeah. – This is his face when
Thibaut Pinot crossed the line. – [Sam] Yay. – [Dan] And then this is
his face when Geraint Thomas crossed the line. – [Sam] Oh. – [Dan] You want to see those again? – Yeah. – [Dan] Thibaut Pinot. – [Sam] Yay. – [Dan] Geraint Thomas. (wind whistling) – [Sam] Now, we jest, of
course, but it has to be said, I was very much of the
Emmanuel Macron expression as well when Thibaut Pinot won that stage, I thought it was fantastic, and it was also great
seeing Julian Alaphilippe doing so well, albeit slightly
surprising, I must say. – Well it would be
brilliant for the country and for the entire sport
if either Alaphilippe or Pinot manage to win it,
because let’s not forget the last French winner, was 34 years ago, in 1985. – Yeah, even we were young about then. – We were.
– That is a long time ago. – I was five, what were you, three or two? – What was I in 1985, two. – Good maths, mate. – Thanks, only just, you
put me under pressure. The team, Souda-Lotto, suffered a burglary at the Tour de France, losing 50,000 euros worth of equipment. – [Dan] I keep forgetting
Souda-Lotto for the tour, rather than Lotto-Souda. – [Simon] Yeah.
– Anyway, fortunately for the team, it was nothing to do with their bikes and components, but rather 50,000 euros
of camera equipment. So they are out, still
able to ride full gas out there on the road, they’re just unable to document it all. – Yeah, which is a shame,
because without that camera equipment, we wouldn’t have known that they’d won two stages and currently hold the lead in the King of
the Mountains competition, so hopefully we can find out
through some other means. There was, potentially
some very good news, for women’s racing last week, as a rumor has been circulating, that the women’s calendar may
be getting a much needed boost in the form of a new stage
race, that will potentially be to women’s cycling,
what the Tour de France is to men’s cycling. – [Dan] This came from a ASO official, who wished to remain anonymous, but was talking to a Reuters journalist. So fingers crossed it will come true, even though there’s been
no official communique from ASO just yet. One thing we’re reasonably
sure about though is it won’t run concurrently with the men’s Tour de
France, for two reasons, firstly logistical, the Tour de France is a
huge beast these days, it’s grown over the last
10 years significantly. But also, because of the demands that would be placed on the media covering the event or events. I can speak first hand about this, I was at the Tour de France last week with Yuris Borne, also
speaking to other journalists. They’re reaching breaking mid way through, just covering the men’s. And I feel that they would
put so much effort in to covering both, that
they’d both an injustice. – Yeah, that’s a really important point to mention, isn’t it? Right, now this time of year is getting on for our favorite time of year, not just because of the
racing that’s going on, but also ’cause it’s time
for the transfer rumor mill to really start grinding. First up, it looks like Arkea Samsic might’ve been investing, the rumor is, that Nairo Quintana, Deya
Quintana, Diego Rosa, Winner Anacona, and even Nacer Bouhanni, will be, or already have
signed for the team. – If true, it’s quite an ecleclic
list of signings, really. – Is it, isn’t it? – I don’t want to be cruel to the French second division team, but I can’t help but
wonder, whether if they have signed Nairo Quintana, they might just suck
out the last bit energy that he seems to have at this point. I just can’t see him fitting into a team with a French culture. – No, it doesn’t seem
like he’s got much energy at the minute. It’s certainly the situation
with his current team, Movistar, looks a little bit
uncomfortable, doesn’t it? Anyway, the rumor mill
continues with Team CCC, and it’s not surprising
that they’re looking to boost their roster,
because they were very late to the transfer party last year, what with the late confirmation
of their title sponsor. But anyway, another
ecleclic bit of signing is Matteo Trentin, possibly
going over from Mitchelton-Scott and also Katusha’s GC rider,
Ilnur Zakarin as well. – [Dan] Did I say ecleclic before? – [Simon] You did, yeah. – [Dan] Eclectic I meant, sorry. Also rumors, are that EF Education First are going to sign Magnus Cort
Nielsen form Team Astana. That Kenny Elissonde will
going from Team Ineos over to Trek-Segafredo, and finally that Katusha are going to lose Nils Politt to Deceuninck-Quick-Step which would bolster their
already quite impressive classics line up even more. – [Sam] Wouldn’t it just? While all eyes might be
on bike racing in France at the moment, we were tipped off on another bike race, that is apparently the highest
bike race in the world. And no, it’s one sponsored
by Floyd’s of Leadville. – No, this is the Tour de
Khunjerab over in Pakistan. You think the Tour de France
is going to be hard this week, going over to 2500 meter
sand above, think again, because this is at 4700
meters above sea level. I don’t think we can even
complain about the altitude at Qinghai Lake anymore. – I don’t think we can, no. If we’re going to do this, we’re going to need to send GCN’s very own resident daredevil. – Who’s that? – Ollie. (upbeat jazz music) (upbeat electronic music) – And now, it’s the moment,
that thousands of you have been waiting for. We’re about to announce
the one lucky winner. – Sorry it’s probably only five people . – Oh yeah, they were shortlisted. – Yeah, we had a semi final. – Very true, Si. Thousands of you have been voting and I can’t tell you how close it is. In fact, I am going to
tell you how close it is. The top two were separated
by a single vote, this is of course, the chance to win a personalized Orbea Orca Aero. Those top two were, Gabriel’s
gold champion Orbea, or Hamish’s Sunbeam. We had over 4000 votes
between the two of them, one separated it, but the winner is. (drumming) I thought you were going to
read it, you want me do it? – Come on mate, don’t leave me hanging. – The winner is, Hamish, with his Sunbeam. I’m so sorry Gabriel,
that was incredibly close. – One vote!
– Incredibly close. Now, if you just had
one more mate Gabriel, you could’ve won
– Aww, don’t say that. – [Dan] It would’ve been a draw. – [Dennis] What would we have
done in a case of a draw? – Bet he’s going to text
everyone now and be like, “Seriously, did you vote?” and someone will be like,
“No, I didn’t Gabriel.” And what a bike that was. Anyway, lets not commiserate with Gabriel. Let’s say, Hamish, woohoo, you
just got yourself a new bike. – Yeah.
– How cool is that? – Unbelievable stuff,
I’m so jealous of Hamish. But, don’t despair if you didn’t win, do despair Gabriel, but the
rest of you do not despair, because we have another amazing
giveaway for you right now. – We do indeed and it’s a good job we’ve got the laptop actually, ’cause there’s so much
to win in this, okay. So first of all, it’s
for two riders to attend the RBC GranFondo Whistler, okay. So for the pair of you,
you will get flights to Vancouver from anywhere in the world. Then you get accommodation in Vancouver from Wednesday to Friday. And then in Whistler
on the Saturday night. You get a reception invitation to the St Regis Hotel on Thursday. You get to go to the
pasta party on Friday, you obviously get your
entries to the Gran Fondo. And then, and this is possibly
the icing on the cake Dan, you get a Helijet ride from
Whistler back to Vancouver on the Sunday, in time to
get your flight home again. How good is that? – [Dan] Quite the VIP experience. – [Simon] Oh yeah. – [Dan] All taking place in September. As Si mentioned, this giveaway is open to everyone out there, wherever you are located in the world, they will fly you in. Entries are going to close
on Monday the 29th of July at 11 AM, British Summer Time. All details on how to
enter this amazing giveaway are as ever, in the description below. – Yeah and we are going
to be there as well. GCN, is going to be attending. Oh yes.
– Are we? – Mm-hmm
– I’ve not been told about this. Am I going? – No, you unfortunately
don’t get the VIP experience. They said they wouldn’t allow you in the helicopter and things. (upbeat music) Tech of the week now, and it’s a first for GCN, wound dressing. Yeah, clearly we are not
experts in this subject, but a company called LQD got in touch to tell us about something
called a bio-polymer dressing. – Well you say we’re not
experts in this subject, I was an expert in getting wounds, but not necessarily dressing them. But any of you out there,
who are experts in crashing and getting wounds, will
no doubt be leaning forward with great interest, and rightly so, because if the clinical
trials are anything to go by, this is going to be very
interesting for you. – That’s right, now if at the
mention of wound dressing, you’re expecting us to pull
out, from underneath our desk of treasures, some
massive wad of bandages, then you’ll be quite surprised, because this is it. And actually I’d say it looks
less like a wound dressing, and more like one of your
very posh moisturizers. – It doesn’t look too dissimilar from one of my posh moisturizers. – No, there you go. – No all you need to
do is spray this stuff over your wound, and two minutes later, hey presto, you have a thin,
transparent and elastic film over your wound. LQD then say that you can
either remove that film when you wish as you
would do with any other bandage or dressing, or
you just leave it on there, because eventually it
will come off as part of your natural skin renewal. – Bonkers, isn’t it. Now apparently, the ingredient in there is something called Chitosan FH02, which is as we’ve already mentioned, is a bio-polymer. Now I don’t know what that is, but I do remember the name
of what it comes from, which is chitin, and that is a very common compound in nature. And LQD say, and this is
backed up journal articles to support it, that it
actually promotes clotting, accelerates wound healing, and also kills common
wound pathogens as well. – Wow, that’s amazing. Imagine going to bed after you crash and not sticking to the sheets. – Amazing
– Stuff of dreams isn’t it? Literally the stuff of dreams, you’d actually fall asleep, wouldn’t you. Now I’m personally
hoping not to ever crash on my bike again and get any wounds, but I’m going to take
piece of this home with me just in case I do. You could have done with
last week, couldn’t you? For your face. – I could’ve done and
sprayed it on my face. Well actually that’s a good point, they say one the things
is that you can spray it on places where you couldn’t put bandages. They’ve even suggest it on saddle sores, which sounds weird, but actually when you think about it, bloody good idea. – Layer of film over that bit. (drill buzzing) Hack, forward slash, bodge of the week. Now don’t forget to get involved, you can either use the uploader, there’s a link to that
in the description below, or you can use the hashtag,
#GCNhack, on social media. The first one this week, I’m already goin to say is a bodge, this comes in from Martin Bentancur. “I got my new bike
yesterday, and didn’t realize “the phone holder wouldn’t
fit on the cockpit, “so I used Velcro strap for my first ride. “My wife says it’s a massive
bodge, but I disagree.” Well I agree with your wife. – [Simon] I agree with your wife as well, that is a horrific bodge. – [Dan] You can’t get
a amazing new Canyon, with a Aero cockpit, and
use some Velcro straps to put your iPhone on top of the stem. – [Simon] Well also, how well, I mean iPhones are slippery
things, aren’t they? We all know that. Brake suddenly, and whew, out it goes. – [Dan] Or if I had a sprint, that would be straight out the back. – [Simon] Yeah, good point, (laughs) – Good point. Right then, next we got
this from Max Bianchi. I don’t know whether this
is a hack or a bodge, because I think it’s a real thing, it’s a bike with a wooden
seat post slash seat tube. – [Dan] But how would you
adjust the saddle height? – [Simon] Well you just get
your hacksaw out, don’t you? – [Dan] How do you raise it? – [Simon] That’s always been the trouble with integrated seat masts, Dan. But there you go, I think
that’s got to be a hack, apparently the dampening
properties of wood are fantastic. – [Dan] So you think you
buy the bike like that? – I do.
– Already made from the shop. – [Dan] I’ve never seen
that bike out there. – [Simon] Unless someone has,
sorry, taken the amazing steps of reaming out a old steel tube and replacing it with a broom handle. – [Dan] Maybe they have, maybe they have. Maybe you can help us out
at home in the comments. All right this came in from
Woaksy, over on Twitter. And he spotted this over in Vancouver. It’s like a DeLorean, that we featured on the channel before, but
with even more going on. – [Simon] It’s looks
like a musical version of a DeLorean isn’t it? – [Dan] It is a musical
version of a DeLorean, yeah. There’s a lot going on
in there, isn’t there? – [Simon] A one person carnival. – [Dan] So much so, I don’t
even know where to start, so I’m going to stop.
– No. Well, it’s got a nice comfy seat, how about that hack. Right, (laughs). Right, next up, we’ve got
this sent in from David, from Oxford, here in the UK, he says, “Not my bike, possibly owned by somebody “with two meter legs, and
whose ass grew sideways.” And yeah, I can’t see why that would exist for any other reason, than
a very, very lanky person. – [Dan] Unless it’s some
kind of bicycle ejector seat that’s just gone off. – [Simon] Well, that’s a good point. It’s certainly a theft prevention device. – [Dan] It’s certainly
a bodge, in my opinion. Next up, we have this from Trevor, “I was watching the Gastown Grand Prix, “when I spotted this, and
exciting as the race was, “this took my full attention,
and several minutes “in an attempt to figure out, why?” “I didn’t arrive at an
answer, maybe you can.” Well maybe we can’t, Si. – [Simon] Well, so to
help the viewers out, firstly we’re looking at a
bicycle with no break levers on the handlebars. Then– – [Dan] I think that’s
a specialized bicycle if I recognize it correctly. – [Simon] I think you’re
probably right, yeah. But then check out those break levers on a handlebar mounted
just behind the saddle. I can only draw one
conclusion from this Dan, that it’s an ass brake. Whoever’s riding that
bike, is using their butt to activate their brakes with. – [Dan] Well, yeah, it’s
like a literal arse saver. – [Simon] Yeah, which I
don’t know why, but I’m sure there’s a good reason,
because that’s a proper, there’s a bit of time and
effort gone into that. But the only problem with
it is if you brake suddenly, the momentum would be forcing you forward, thereby taking pressure
off your brake levers. So the harder you brake,
the less you brake, you see what I mean. – [Dan] You could get like
skid marks too, couldn’t you? Right, that’s all for
the hack forward slash bodge section this week. Don’t forget to submit your
entries for this time next week. – That didn’t even make sense – No it didn’t, at least you laughed. – Yeah I did, just mentioning skid marks. (upbeat music) – Caption competition
now, your weekly challenge to win a GCN Camelbak water bottle. Last week’s caption photo was this one from the Tour de France of
Vincenzo Nibali shaking hands with Geraint Thomas. The caption winner is this, it’s from Christopher Krustrup. Caption: Vincenzo, did you know that Wales are faster than sharks? So I had to spend the
last 35 to 40 minutes researching whether or not that’s true. – And the trouble is Dan, the results from my research are
actually quite inconclusive. I can’t work out, I think it’s a whale, I think a fin whale is the fastest, at 47 miles per hour, when it jumps. Whereas the mako shark, it
clocks at 31.1 miles per hour, but the results vary so dramatically across the internet.
(laughs) I don’t know what’s true.
– Across different websites. – Yes. – Regardless, Christopher,
you are a winner of the GNC Camelbak water bottle. Send us your address
as a Facebook message, and well get that off to you. – One thing I did discover,
the fastest thing in the ocean is a sail fish, they go 68 miles per hour, that’s over 100 kilometers
per hour through water. – And how fast does an octopus go, Si? – 24 miles an hour, 24.9 miles an hour, for an octopus. – Blimey. – How on earth does an
octopus go 25 miles an hour. That’s faster than you
on an Aero bike on land. – The things you learn whilst filming or watching the GCN show. – Especially during the
– There you go. caption competition. – We should put that little
nugget right up front shouldn’t we? This week in
– Coming up this week. The world of cycling, I’ve
learnt that an octopus goes 24.9 miles per hour. – We investigate whether
ketones are having a dramatic effect on the Tour de France and what is the fastest fish? All right, this weeks photo
we should get onto now, is this one of Alejandro
Valverde on a mountain somewhere at the Tour de France. I should get you started. My word, this new FaceApp
thing is going everywhere. – [Simon] Oh ho! Ouch, zing, Alejandro. – Yeah, right, give your best captions in the comment section down below, and please make them a bit simpler so we don’t have to do all this research, well, at least Si doesn’t. – He’s only just a little older than you, but he does look like he’s
doing better than you, in that respect, doesn’t he? We’re getting on to
comment of the week now. Where we pick out some of our favorite comments that you’ve been leaving under our videos from the last seven days. The beginning of which,
is Ask GCN Training. So you submit your training questions and we pick the best one out and answer it with the
help of Zwift’s coaches. As an added bonus, not only do you get
your question answered, you also get three months
free subscription to Zwift. – Yeah, the winner of
that prize this week is Blake Harper, who wrote, “To what extent is it
possible to train sprinting “form indoors on a smart trainer?” “For example, for cadence
I’ve noticed that I can easily “hit 150 rpms on my Tacx,
but I struggle to get “above 130 without bouncing
when I’m outdoors on my Colnago. “Do you have any advice?” – Yeah, its probably because you’re using the Colnago, isn’t it? I guess that’s probably the difference. No, in all seriousness,
there’s two parts to this aren’t there really,
there’s the discrepancy in leg speed between indoors and outdoors, and then actually the
ultimate power output discrepancy between indoors and outdoors. When you look at the first one, leg speed, I think perhaps the main reason
that’s so vastly different is due to the lack of resistance that you can get when
you’re riding indoors. So you can remove obviously
things like wind resistance, you can remove rolling
resistance, and ultimately what you just get is resistance
from the drive train. So you can spin for your life. – [Dan] There’s the other factor as well, that when you’re in an indoor trainer, that trainer is basically
propping your bike up for you like a stand. So everyone ounce of energy,
that you’re putting into your bike is going into
achieving the maximum cadence, which is why you’ve
probably got a discrepancy. – Yeah, I’d say that’s probably
more important actually, isn’t it? The good news about this though, is that actually if
you’re seeing improvements in leg speed indoors, then
that pretty much definitely translates to outdoors, doesn’t it? Certainly the Zwift
coaches would think that. And I think I agree with it too. – Yeah, and there’s
another aspect of this, which as you mentioned
is the peak power output, and there’s no doubt, as you’ve mentioned, you probably find a
higher peak power output outside versus indoors and that’s for the complete opposite reason. The fact that you got it in a stand means you can’t maneuver the bike and use your upper body to get
that extra power output out. – [Simon] No, that’s right,
whereas when you are outside, even skinny little arms like
ours, can add a little bit extra to the bike. – [Dan] Three, maybe four watts. Each arm. – [Simon] Yes, exactly, despite this, even with, as you’ve said,
the difference in leg speed will have a benefit training
indoors versus outdoors. And actually the same is true
of power output, isn’t it? If you boost your power output indoors, either through resistance
training or max sprint, it will definitely translate
onto the outside as well. – Yeah, so in short, it’s the bit the same as doing threshold effort, isn’t it? Like this, it’ll be lesser
indoors versus outdoors, but still worth doing as
part of your weekly routine, because it will transfer
out onto the real world, or into the real world, shall I say. – Yeah, I suppose it’s a
bit like doing gym stuff, doing weights, and that
can boost your peak power, even though you’re not peddling, you’re just lifting weights. – Yeah, but in the end
you don’t transfer it out into the real world, do you? What weights are you lifting? Only when you move houses or something. (laughing) Anyway, wish you the best of luck with it. – Right then, on to comments
left under other videos from last week. Underneath Egan Bernal’s
Pinarello Dogma F12 X-Light. Muchirigateri said, “Dan’s disdain for doing free-hub “sound-checks is palpable.” Less palpable than when Jeremy
did a free-hub sound-check but still, yeah. – I don’t mind doing them but when I forget I get
slaughtered in the comments, that’s what I’m worried about. Anyway, underneath, “Too
Tough for the Tour de France,” we have this from rrobotman, “Considering he was keeping
up with a legend on an ebike “most of the way, Si
is seriously a beast.” – Yeah
– Did you put that comment in? – [Simon] That I did mate, I can’t believe you rooted it out, but thanks very much for that. Yes, read did. (laughing) Then underneath Ollie’s
great video which is, “What Tour de France
Riders Eat for Lunch,” Scot Meyers pointed out, that
Ollie’s sort of caffeine gels might’ve been a bit obvious. “And there are caffeine
gels, which are gels “with caffeine in them.” To which DC replied, “For caffeine, “I just prefer a cup of coffee, “which is a cup with coffee in it.” – [Dan] Very good. Ollie does claim that
he did that deliberately for humor, but we’re not
sure if we believe him. – Yes. – Finally this week, we had
this from iam1ina1000000, – One in a million. – This, oh is that what it is. – Yeah, I am one in a million.
– I am so silly. “This story would be so
much more interesting “if these guys were
naked, just sayin’ folks.” That is weird. Oh, somebody replied
saying, “That’s weird.” – Well, I think it’s probably a reference to a comment that we got last week, which said that we should start doing maintenance videos, naked. – Oh I see, right. I didn’t bother watching last week’s show ’cause I wasn’t in it. – You were busy mate, yeah. Right, anyway, what is coming
up on the channel this week? – Well, on Wednesday we are
going to show you the secret to better recovery
– Oh yes. – Also in that same day
we’re going to tell you how Tour de France climbers go up those climbs so blooming fast. Thursday we’re going to have a look at what Strava Summit is, is that something you’ve
been looking into? – It is indeed, yeah. – Then we’re also going
to look at what could be the most brutal stage of
this year’s Tour de France, the penultimate day of the
Val Thorens on stage 20. – [Simon] No gravel this time. – No.
– Significantly easier than it was on Sunday. – And then Friday, we’ve
got the latest edition of, “Meet the Presenters,”
this time of course with J Pow, Jeremy Powers. – Now on Saturday, this is the one you’ve all been waiting for. This is where GCN’s
resident daredevil, Hank, teamed up with ultra-endurance
legend, Mark Beaumont, to recreate stage one of the
first ever Tour de France. It’s utterly brutal, utterly inhumane, but watch on Saturday
to find out they got on. And then on Sunday, equally inhumane, we tested to see if triathletes
can ride bikes, yeah. Find out the answer that one. – No, obviously. – Well yeah, we did
need quite a few bottles of this stuff, put it this way. – Monday, we’re back
with the Race News Show. Tuesday back in the set for the GCN Show. Don’t forget you can also
catch daily highlights, wherever you are in the world, of the Tour de France,
over in our new channel, GCN Racing. (upbeat rock music) – Well we’re getting towards
the end of the GCN Show now, but as ever we have
extreme corner for you. And this week, it’s less extreme, but more just remarkable, isn’t it? – This week in the world of cycling, we learnt that Ruby Issac
is way better on the rollers and everything else than we are. (wheels squealing) (loud thudding) – Woohoo. – Whoa. – Hashtag, skilled.
– Yeah, it is. – How many takes do you reckon that? Pretty first go.
– Probably first go, but maybe she can let us know. Anyway one more point of
business before we leave you for this week, and that is
to say, that the GCN events this summer, GCN Avoriaz,
we’ve been told there’s one more room available, just one more, so one opportunity to
catch up with such delights as Lloydy’s pub quiz,
and the GCN Show live, as well as the amazing riding on offer, in that part of the French Alps. But there are a couple
more at GCN Saalbach, which is the end of August. – Avoriaz is just over a
week away now, isn’t it? Looking forward to that.
– Crickey. – Looking forward
– You’re going to leave to my pub quiz.
– your training to the last minute this time, aren’t you? – I’m not doing any. – No training at all? – Just going into it cold. – Tapering from GCN Mallorca in March. – Yeah, mid March till now, anyway, hopefully I’ll be all
right, fingers crossed, but we’re with the slow
group, whoever’s in that. – Yeah, yeah. – That’s all for this week’s GCN Show, if you’ve enjoyed it,
please give it a thumbs up just down below. I’ve said it again,
– Awwww. people are going to go mad
in the comments about that. If you’d like some more content, I was actually out at the
Tour de France last week, so I’m not sure if I mentioned it, but I visited Dimension Data and NTT, one in the same company, to find out how they’re using data to bring fans closer to the Tour de
France than ever before. Just down here, somewhere. – Just need a thumb up.

100 comments on “Will Ketones Decide The Tour de France? | GCN Show Ep. 341

  1. That Specialized bike, with the 'ass-brakes'…its probably for someone who likes to ride no-hands a lot. 🙂

  2. Most, if not all of studies with endurance athletes and keto diets and exogenous ketones (produced outside of the body) only examine either Fats vs Carbs. This is not how they are being used. A rider, let call him Froome will eat a low carb high fat diet during the off season. The athlete becomes what is called fat adapted. His primary fuel source is now fat. The average body contains 100K of fat calories. Most rides are at a lower intensity for the pros. For example, lets say previously he would burn 90% carbs and 10% fat (over simplification) now the opposite is true 90% fat and 10% carbs during a ride. When on a mountain stage, towards the end, our rider, Froome will consume gels. This acts like rocket fuel for his fat adaptive system and the effects are long lasting. 6-7 years ago exogenous ketones were not commercially available. Team Sky had a professor at Cambridge produce the ketones for them. They were very expensive and tasted like crap. However, exogenous ketones are now commercially available, are much cheaper and palatable. It would appear that there is a biological issue involved as well . Those with a blood type O, seem to be able to thrive with this program of low carbs high fat most of the time. 40% of the western world has this blood type. Just my 2 cents worth

  3. I started to hear background music on the show for the first time on the GCN show. It's annoying and distracting.

  4. 2% in a 40K TT could still be the difference between podium or no podium.

    Also, you sure it's not spelled Lake Miniwanker?

  5. Well done guys, Dr. Ollie you killed it! Ask Dr. Ollie about whales and sharks.
    Don’t think women’s cycling gets nearly close to enough viewers as men, nor will it. Comparing the two regarding pay, support, sponsor; etc should just slow down.

  6. Hey gents – thanks for answering my training question, excited for those 3 months of zwift… let me know how to be in touch

  7. GCN, If you decide to do away with hack/bodge I will resend my subscription. I was LOLing and wondering how in the world the traveling carnival could be a hack, and the 007 theft prevention bicycle ejector seat could not be a hack?! Next you are going to tell me the world is not round? Oh, and the bizarre ass brake controls a contemporary rear disk brake. Thanks, a great week.

  8. You said that the third molecule was the conjugate base of beta hydroxybutyric acid, but you showed beta hydroxybutyric acid. Nice try, but maybe stick to cycling guys 😉 other than that, great vid and really interesting!

  9. i like the GCN show normally, but its getting quite long these days with a lot of paid promotion… Anyone else feel that way?

  10. how does the body prioritize energy types. will they utilize Ketones ahead of Carbohydrates. I always thought that the body broke down the simplest energy first? I ask as i wonder if the body could reserve the carbohydrates for the high energy requirements.

  11. Perhaps a womens tour whilst a mens tour is happening but in a different country like the Giro Rosa currently when the tour de France is on.
    So Mens Giro, Womens Vuelta
    Mens Tour, Womens Giro
    Mens Vuelta, Womens Tour
    PS la course was soo good my daughters loved it ! 👌

  12. They are a trick food supplement funded originally by the military. Stops you burning glycogen. Ketones are expensive and are freely available on the internet via eg The Feed. We can't blame Lance Armstrong for this but he did bring it to public awareness.

  13. I'm a diabetic cyclist and we are all warned about the dangerous effects of excess ketones in our system. Not sure whether there are similar problems if you over-medicate with these ketones. According to my ketone meter, I will produce a small amount of ketones naturally during a long ride, even if my blood glucose level is normal (or as close to normal as I can get it!).

  14. You can't take a Ketone supplement and expect to use the full calorific value of a Ketone unless you are Ketone adapted. Otherwise it is just another typical fat molecule. Maximum power from Ketones is 5% less than glucose, although once Ketone adapted, energy available from stored body fat is theoretically 100 times greater than energy available from stored glucose.

  15. Meanwhile Race Reporter Ruby Isaac is well into her training to to become world champion roller racer, world champion disc golf, probably world road racing and tt champion, and future GCN presenter. She might as well just ask her parents to change her name to Emma Pooley now.

  16. I see you guys aren't familiar with ABS (Ass Braking System) LOL.. In all seriousness though it may actually work somewhat like that. The natural momentum of your ass trying to continue fwd would naturally ease you off the brake levers a hair possibly preventing wheel lockup if the ass in question and brakes were 'tuned in'.. It also puts your weight farther back on the bike which isn't a bad anti-'stoppie' measure.

  17. Caption: Valverde has been riding so long, that it was he who set that penny farthing record in his teenage years

  18. I want a GCN Bottle for being the only one recognizing that OLIVER Bridgewood is Cornelius Lewis Robinson from Meet the Robinsons 🗽

  19. I've used a professional coach for the last 2 years and there is no more room in my trophy cabinet ……….simples 💪

  20. How much are you regretting those comments about Quintana? Stunning stage win yesterday, Vintage Quintana!

  21. The previous GCN show has 178K+ views, but only a few thousand contest votes? Think maybe you should have taken my suggestion (last week) and provided mobile viewers the ability to vote?
    Scrap the results. Forget choosing finalists. Let viewers decide from all the entries (or at least from the first of each specific design).

  22. Surprised you didn't quote Geraint Thomas's reply to George Bennett's tweet: "Ah I think they were booing you mate"

  23. On a 3 week tour, on 3 mountain stages in a row, a) 2% can be the difference, and b) a TT does not test the stated benefit that they help recover…

  24. this will give the first teams to use it a slight advantage, but when everyone else learn to use keytones for endurance events, their advantage goes away.

  25. Not surprising that it tastes like nail polish remover is acetone is one of the components, since that is a common nail polish remover

  26. Why are road bikers so bent on tech crap even trying to modify bodies just get out and ride no matter how fast you go

  27. Do you have a PDF copy of that journal article, (Dr.) Oliver? 
    (Nutritional Ketosis Alters Fuel Preference and Thereby Endurance Performance in Athletes)

  28. #AskGCNTraining I did a FTP test on Zwift today. Maintained 214w for the 20min test (not too bad for a fat old guy). Zwift pops up a message saying my FTP is 204. What??? I expected it to be 214. Why the difference?

  29. 22:40 I swear i heard you say "Womb Dressing" and my brain stopped for a sec to think. xD but listening back you obviously said wound dressing xd

  30. Do you know long I’ve been waiting for this sort explanation thanks Ollie nice to your not being wasted on cycling weekly doing way better job over @GCN

  31. 11:00 ah tha only done 309 miles like not killer meytuz which a nor soundz like a reyt shift but tha expectid ta do a thowzand before breakfast. Thousand ah, miles like. A tell thee, only coz ut road network thaz not made a sonic boom! Did tha ere a bang any time? It wer me splittin t’air wi me front weel. Anyway no need ta stay ere telling me ow wunderful I am am too modest ahh, best get goin ta beat sun settin. Al sithee

  32. Ollie's story on Ketones was pretty good except for his analogy on the Prius. The battery and electric motor are for peak outputs similar to carbs. Otherwise, the car runs on the small gasoline engine, which is more similar to Ketones. Despite the conversion losses from chemical (gasoline) to mechanical (engine) to generator (electrical) to chemical (battery) and then back from chemical (battery) to electrical to mechanical (electric motor), you gain MPG (or kpl) by the more efficient smaller motor running at a constant efficient speed.

  33. At 10m19s. Forget Ketones they're overrated. If you really want to go well get some of Mark Beaumont's mates Keystones!

  34. 16:14 If only we had another means to document the tour….hmmmm. Well played gentlemen…well played!

  35. Watching GCN whilst on my turbo trainer. Dan’s comment about “skid marks” had me coughing, spluttering and chuckling through a particularly hard interval. The old ones are the best!

  36. What I most know about ketones is they are the form of energy your body uses when it's out of glucose. Ketones are obtained by breaking down you fat reserves. Hence the question. How do world class cyclists use ketones when they have almost no fat reserves? Supplementing with artificial ketones shouldn't be as effective using any type of sugar or did I miss something?

  37. Caption: For once she could've bought me a cheap alu neck chain as all the other mothers do for their sons, but no… it always has to be heavy gold one!

  38. As the makers of the ketone ester widely used in the Tour, the HVMN team really enjoyed this video! Easy-to-follow breakdown of the science, thoughtful discussion, and interesting questions raised here. There is absolutely more research to be done on the application of ketone esters for performance, recovery, and even cognition…all of which we're currently hard at work. 🤓

    If you want to check out HVMN Ketone Ester and learn more, click here 👉

    Our Youtube channel is an evidence-based resource for exogenous ketones, nutrition and metabolic health, physical performance, and the like. We recently released a podcast featuring Pete Jacobs, a World Ironman Champ who follows the carnivore diet.

    Follow this link for that episode and let us know what you think! 👉

  39. If you decide to come to AB, Canada to know Lake Minnewanka and the Canadian Rockies I would be pleased to join you! Starting from home in NW Calgary is only 150km 🙂

  40. Typically there needs to be an adaptation period to see increased performance. Exogenous ketone supplements are limited by athletes ability to utilize them. The adaptation increases mitochondria to utilize ketones.

  41. No pro athlete is gonna share their nutritional secrets. Typically there needs to be an adaptation period to see increased performance. Exogenous ketone supplements are limited by athletes ability to utilize them. The adaptation increases mitochondria to utilize ketones.

  42. On a keto diet, over a period of several months, I lost 35 lbs and got down to 214 from 249 lbs. (I was 210 out of Army basic but I'll be [email protected]#$ed if I will do that again!) Keto works, but it's not easy and it's not necessarily fun… I'm 70 years old and ride a tricked out Catrike Dumont recumbent trike (Hey Dan, that's "trike" not "tricycle") Dan, didn't you used to ride with the Cervélo something or other? 8-] (Running joke, I know)

    I have a suggestion. I rode both a Trek Hybrid bike and a Giant Defy 2 road bike, til bone spurs and osteoarthritis forced me off bikes. I started riding a recumbent trike. It kept me peddling and it became my passion. Riding any flavor of bicycle is torture if you have shoulder issues so triking is an excellent alternative. Howzabout doing some reporting on triking activities on GCN? BTW, ICE trikes are manufactured in the UK so why don't you contact them and see what kind of activities there are for us "trikesters"? Hmmm? I've logged over 5K+ miles and use Strava to track my workouts.

    I've been watching GCN now for a long time. It's entertaining. It's serious. (Well, mostly. I do miss Matt.) It's informative and I've learned a lot from you chaps. (The largest part of my DNA is English BTW. Cheers.) I've watched GCN grow and just get better and better. Keep it up mates.

  43. You guys absolutely butchered the name of that Alberta Lake. If you guys ever came to Calgary and asked for Mini wankers (as you put it) I'd point you to the nearest strip club haha

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