How Does The Tour de France Impact Rider Health & Fitness? | Exclusive Pro HR Data

[@gcn]

Are you surprised how the pro's resting heart rate data changed?

[@NickMaovich]

36 BPM seems like way too unhealthy for me. I'm probably just jealous because I'm Tour de Home rider :|

[@manavdewan7170]

Ya

[@rafaelschober1945]

not really, I experienced the same after long days in the saddle, even though I obviously don't ride as far as they do

[@10geneman]

Low resting HR is probably also a function of the fact that all of these guys have hct bumping right up against 50%. More rbcs = greater oxygen delivery = less demand for increased circulation.

[@mathewrose2951]

I’m wondering if WADA wants access to this data since I read that in the Armstrong era riders were risking deadly clots by blood doping and pumping themselves full of EPO. I believe a rested tour team averaging 41 bpm is reasonable if my own resting rate as a fit enthusiast is just under 50. I think Pantani had some crazy numbers back in the day, but these numbers are what I would expect from non-doping athletes

[@soccernerd200]

Christ Ollie, that hair is not aero.

[@sdm000]

😂😂😂

[@s1mpleniko488]

Heavier too

[@truevillain9343]

definitely =D

[@jordancurrie2619]

Looks like he was getting too much sleep and got out of bed a bit late

[@timblass4811]

Ollie are you secretly sponsored by Alpecin? :)

[@scottf3456]

I like ollies dedication. With a segment so focused on sleep and rest he went the extra mile and did it all with a magnificent display of bed head.

[@K.D.B23]

That piece of hair dangling at the back is a feat in its self

[@hottrash7503]

someone should cut it off at gcn and record it and share it online.

[@Mars2Point0]

Killing me lol

[@maximkrivov]

It's an Aerodynamic faring to smooth out airflow

[@MrWrob32]

Ollie barbers have opened back up for a whole now. Get a haircut gain 3-400gms

[@RSO-IV]

Most British doesnt care much on their appearances. Be it men or women. 😜😜😜🤭

[@shabbar8]

Quite amazing that EF cycling shares their data. Makes for some really interesting physiological datasets. Great content GCN!

[@jaspreetsidhu5708]

Whoop is probably a sponsor so they might not have much of a choice in terms of the data being shared.

[@shabbar8]

@@jaspreetsidhu5708 I'd be surprised if Whoop and EF didn't have those things contractually limited and that EF reserve themselve the right to veto any publication of data which could be linked to specific riders. Plus the european DGPR-law also needs to be taken into account

[@bariamarkjamesa.6343]

Sir can I have a bike even it's cheap I'll accept please sir I don't have money to buy one, please consider it a birthday gift for me because I turned 18 on March 17. Also my father died last year, please sir hear me out 😓 I'm from the Philippines

[@KonathalaRohit]

education first ;) Secrecy second ;P

[@gefloigle]

The hair. The. Hair. THE HAIR. #THEHAIR *THE HAIR* _THE HAIR_ *_THE HAIR_* 𝗧 𝗛 𝗘 𝗛 𝗔 𝗜 𝗥 𝒯𝒽ℯ ℋ𝒶𝒾𝓇 The End.

[@lisaswe]

It is indeed great.

[@luke4755]

The air

[@frankmaykut7266]

Ok, that’s is seriously all I can take of Ollie’s hair.

[@preetigupta5020]

Cycling has completely changed my life i had hear condition but as i am cycling and watching gcn it improved my health condition . Thanks to gcn and cycling

[@magzire]

Glad you got your hearing back

[@matthewcrich5951]

magzire you cheeky bugger 🤣😂🇨🇦

[@ramaananda5035]

preeti gupta , That is a interesting thought that you have brought forward, Ollie did say that it appears that they are fitter! However it seems counter intuitive that they could be stronger & more powerful. However I imagine that their average power is pretty consistent through out the race!

[@nawaal4452]

@@magzire 😂😂😂

[@jeffbarco4394]

In regards to the assumption that the riders are getting fitter after the rest day because their RHR is lower than it was when they started the tour, is actually not true. The lower resting HR after the rest day is due to Parasympathetic saturation, or sympathetic withdrawal of the autonomic nervous system.. In simple terms, their RHR drops, because their body is going in to ultra recovery mode due to the rest day. Whoop does not reflect this unfortunately. The fact that the riders are going into Parasympathetic Saturation, or Sympathetic withdrawal, is an indicator that they are Overeaching. Most teams, on the rest day, will try to put in a short ride with some short but strong efforts to keep the body in fight or flight mode so that the body does not go too deep in to recovery mode, which could make riders feel heavy and sluggish after the rest day.

[@TomatoDave]

Good insight. I use HRV to check my morning readiness, which shows when I’m in parasympathetic status. Surprised that Whoop doesn’t assess this.

[@lewesandrew]

Nice.so many poor assumptions in this video. I wonder if the bad science grates on Olly, with his PhD.

[@jeffbarco4394]

@@lewesandrew Whoop is a Paid sponsor.

[@ionutferenti6525]

@@TomatoDave whoop does measure HRV and is one of the pillars in calculating the recovery score. For some reason he doesn't speak about HRV data in this video, but he does a bit about recovery scores, which does account for HRV.

[@kirklangdon1591]

They also eat the good chicken, which helps them recover much faster too.

[@aarondangelo6313]

I love these deeper, science-y (it's totally a word) dives into biking and the tour and grand level events!

[@blackjackprofit4379]

2:19 Do you want thick hair? kzbin.info/www/bejne/Y6KchHeHd6-CobM

[@zaprowsdoweriii662]

Ollie's head is possessed by the spirit of an angry rooster.

[@Ystadcop]

In England, the word for a male uncut foul is "cock," not rooster.

[@colingoulding3227]

Hilarious 😂 I

[@blackjackprofit4379]

2:11 Thick hair on video! kzbin.info/www/bejne/eqimh559qdaEitk

[@martincaron3546]

🤣🤣🤣👌

[@ViveSemelBeneVivere]

Oh cock!

[@nadgeemark]

Thanks Ollie, that was excellent. I’m in Australia and have sat up until 2am every night watching the TDF. I’ve noticed that both my resting and threshold couch heart rate have also done strange things over the past 2 1/2 weeks. Particularly last night when Richie Port flatted in the gravel...it stopped altogether for around 10 minutes. All’s well now though. 👍🏼🥴

[@westwingaero]

big shout to EF Cycling for making the data available, it’s highly fascinating to know what goes on with the pros. Hope more teams will take up the challenge and make such data available

[@johnsummerhayes5720]

Hi Ollie, That was the most interesting GCN presentation I have ever seen.I'm not aware of anybody combining the science of heart rate with the day to day pressures of riding a 3 week stage race in a publication before. You really told the full story. Brilliant, more of the same please.

[@bettyjones8363]

Ditto

[@onepunchbud1472]

Actually, when you do a 2 week Training-Camp as a normie you will experience many of these points yourself: sleep gets worse, HR goes up, max. HR goes down. And after a recovery day you start kinda tired but it helps so much.

[@Closed1405]

I'm just a random guy that owns a mountain bike scrolling through KZbin at 3:30AM. I don't need to know this but yeah, I'm watching.

[@lisaswe]

I quite like Ollie’s hair! Looks cool and gives me a confident and happy impression. Don’t listen to the negative comments ☺️

[@Sprinklesofjoy]

Ollie's hair is strong bait for the youtube algorithm

[@davidmoreno790]

These are the kind videos I subscribed GCN for. Understanding the physiological functions, changes and basis of a cyclist body is just perfecto to see how amazing our body is and can actually become with the right training.

[@richcrompton6891]

When I was a competitive swimmer in my youth, my resting HR was 36. It has been riding over the years and now, in my mid 50’s it’s now at 45bpm when I’m rested, but after a hard day of exertion, it’s 10bpm over that. It’s great to know what your body’s average readings are. I still think it’s funny if I go to the Dr’s and watch their faces when they take my pulse! They always double check it, but I think it goes slow when you get fit because when you are training it goes so high. You’ve only got so many beats in your heart! Probably!

[@nofascistsonmywatch]

I remember back in the dinosaur days of the sport, way way before any real sports/endurance physiology/medicine and/or general knowledge was around, one had to inform the paramedics treating riders after a crash in a crit/road race that their resting pulse is so low because of training/fitness, and NOT because of 'shock'. Otherwise, they would wrongly start treating the crashed riders for said shock. ;)

[@kenb1828]

Ollie. Your hair. It looks like it's just ridden 21 tour de france stages!

[@cannywf1]

I have a resting heart rate of 49bpm, I’m 47 years old, cycling for just over 2 years now. 👍🏻🚴🏻‍♂️

[@laggypirates]

Ollie's hair is a work of abstract art and belongs in the Louvre.

[@innocentiuslacrim2290]

This was really interesting to see. I have tried a few times to do these max effort rides, but going several hours from 80% to 100% of your max heart rate is just inhuman. Their training must be savage to get to that level of conditioning. This really gives a new perspective into the sport, thank you for doing and thanks to EF Education First for supplying the data. They are truly living up to their team name :-)

[@genaddi1234]

Me with my below average resting heartrate of 55bpm, you know, I'm something of a pro cyclist myself

[@AnkaPLoo]

Hahaha I thought the same thing 😂

[@tomrengert1221]

My hr sometimes scares me😂 Seeing it drop down to 36 37, I'm like, I'm not this fit, am I (gets on bike) no, I am not, not a Tour De France pro😂

[@pucuk1668]

@@tomrengert1221 you clearly need to see doctor..

[@tomrengert1221]

Yes, quite clearly! I did speak to one, and apparently shouldn't be a problem, it's just an extreme case or exercise-induced bradycardia, it gets down to about 21bpm at night! @@pucuk1668

[@desertrainfrog1691]

@@tomrengert1221 That's one every 3 seconds, wow.

[@enginyldrm7639]

My reseting heart rate currently is 42 - 44,, and I am 53 years old cyclist, not a professional one When I am really fit and rested it may even go as low as 39. So, low resting heart rate itself doesn't say too much since it has to do with the BMI as well. The power and recovery are more important. I don't have the same power they have nor can I recover as quick as they are.

[@dansotelo228]

WOW... When I was a Cat-1 in the late 70s basically doing tours in So Cal & Mexico and placing in the top five, I can remember laying in bed listening to my heart thru my pillow and freaking out that my heart was about to "STOP"!. My pulse was so slow, I had trouble falling asleep thinking I was going to die in my sleep. Nowadays I only wish I was that fit... Ha ha ha ha, as I'm 64.

[@nofascistsonmywatch]

Ah yes, the days of high 30s heart rates and under 6% body fat content. I had NO CLUE what my; FTP, MAX VO2, anaerobic threshold, watts for any duration, etc., etc., was back then since NO ONE was measuring, or even had the capability of measuring those 'metrics', that long ago. LOL! (Maybe not even Merckx with his scientific FOR THE TIME hour record training). Yeah, I could only wish for those things now at almost 70, as well as my long lost climbing skills. :( :(

[@nigelduckworth4419]

I have been a keen cyclist for 50+ years and am fascinated by this data. The rise to average 71BPM from 41 by the end of, or well into a stage race is extraordinary. But I think this shows how cycling, even my moderate efforts, helps fitness and longevity (I can tell you it does nothing for the prostate, unfortunately!) I Used to mountain bike pretty well every night in my forties and 50s up the high peaks of the Peak District. Result: a resting heart rate in the high 40s and, on an advanced asthma test at the GPs, I was told that my respiratory performance was of someone 15 years younger-with me having Asthma! So pushing yourself a bit pays huge dividends and my advice to anyone is to keep it up as much as you can for a lifetime, not just when you are young.

[@basengelblik5199]

Hypothesis: When the heart is being stressed for a long period it becomes more effective. The heart muscle is now used to stretch more and create more volume and it exhales a higher % of its volume. Therefore it will pump at a higher volume per stroke. You can measure all of this with an MRI scanner. I have been in several due to a heart condition and this is the effect that has been happening to me over the past months. It's a theory. Would be fun to have a mobile MRI scanner and do this experiment in the TDF :-)

[@KJay2k]

GCN should give Ollie a golden star for his quiff dangling hectic up and down while Ollie messing with the numbers ;-P

[@coltonkennelly8231]

I love how we were able to see this while the tour is still going on. Would love to see more types of these videos!

[@chrispearson7163]

Never mind how hard is the TDF. I've just completed my first full week of commuting (100km, with a steep hill on the way there and a steep hill on the way back). That was hard.

[@blackjackprofit4379]

2:11 Get your Hair Back! kzbin.info/www/bejne/hYrJi3-oosR-ask

[@robbchastain3036]

Kudos for that and enjoy the ride, over the past decade my return to cycling commuting changed my life for the better as I went six years without a car and had to ride my bike to work.

[@monitorcomputersystemsltd2375]

100km each way. Kudos!

[@rileypoirier6060]

@@monitorcomputersystemsltd2375 with a steep hill none the less.

[@werdna1969]

The virus is making me realize how vital the hairdressers are to the modern society.

[@maytersandwich]

Even with the somewhat distracting (yet entertaining when you take the hair + reading the comments together), I did really enjoy this video. It was interesting comparing what Ollie was giving about EF to my own Whoop data.

[@aarchiewaldron]

Fascinating info. and one of many reasons why I love GCN! Thanks to Ollie and EF for another great episode.

[@cayennepeppa707]

Dude!!! this kicked some serious arse!!! Great content. I love this kind of content. Thank you so much. Also, the hair rocked!

[@littleoldlifter]

Interesting ! From a physiological basis I have personally had this adaptation after tough block of training then recovery gone from absolutely shattered to smashing my PB in club series league like testers for events.

[@rickcoyne7845]

Another Fantastic informative Video by GCN. Thank you!!!

[@james-p]

191 bpm? Holy Crap! I think the fastest pulse I've ever recorded, when I was at my fittest in my 20s, was 160 (and my resting rate was 45). If my heart ever hit 191 they'd be calling for the defibrillator lol. At the other end of that, 28 bpm - jeez, that's only one heartbeat every 2 seconds. Their level of conditioning is remarkable. Great vid, thanks!

[@rebinu]

191 isn’t that special

[@james-p]

@@rebinu It is for me.

[@abdul-kabiralegbe5660]

Hands down the most informative GCN video I've seen. More like this please!

[@stika007]

One of the best videos you have ever done on this channel! You answered so many questions I had and put it all in context. Thanks!

[@martinbarabe4643]

I’m 47 and a couple years ago had to undergo surgery. The alarm went off at night for my heart. The nurses rushed in and i woke up. They were not used to such low heart rate. I told them that between 39-42 is totally normal for me.

[@mohdnazruladnan1228]

This video already 2 years. EF and Whoop still collaborate together. And yes this video worth to watch after Bettiol breakaway yesterday.

[@chrisbaum998]

It's so cool that EF Education shared this information while the TdF is still happening!!

[@championthewonderhorse9733]

I doubt UAE Emirates would share their data. So dodgy that ITT...

[@ruthhutchings6140]

That was brilliant presentation of some potentially rather dry and dull stats - thanks Ollie it was actually incredibly interesting it would be great to see more content like this.

[@rizaldarmawan4576]

I started my cycling activity from the scratch and scared so much since my community have better performance on their bike. then i realized there must be some science behind this, and this content is amazingly show me hard work pay off, even i wont be an athlete. The data are stunning, and iam amazed by just how good an elite atheletes are.

[@rickkuny6591]

Go ahead and laugh about his hair but really marvel at his contagious enthusiasm! Really remarkable collection and analysis of this data. Pretty valuable information. Thanks for doing this

[@reason43poole37]

You obviously know your stuff but you have the ability to be surprised and humble in sharing, this makes it a pleasure to watch and listen.

[@reddiver7293]

Been cycling for about 40 years. My bpm has set off alarms a few times in hospitals. When other hospital personnel came into the room, the nurse attending me just told them, "Don't worry, it's a cyclist." And they would say, "Oh," and turn around.

[@Steven-hb5up]

And then everyone clapped 😂

[@reddiver7293]

@@Steven-hb5up Only your mother did.

[@Chris-0703]

You clearly took a nap on the left side of your head before this was shot

[@donglobal]

love this kind of data, keep it coming.

[@IanB17]

This was absolutely fascinating. More content like this please 👍🏻

[@gcn]

Thanks Ian we will see what we can do

[@sabrinaweber5020]

Unpopular opinion: A teacher of mine and former cyclist once said that among the top 15 at Tour de France, there’s not one clean athlete. Would love to hear more about that topic, or doping in general ;)

[@philforde5871]

That teacher was blowing smoke. If he gave you the evidence of drug use of each of the top 15 riders, that would be useful to know. Of course he doesn't have any reliable information.

[@ARUSApacecarHAMPTON]

But the question is interesting in how the ones that are possibly doing something illegal compared to clean riders. Heck just have 2 TdFs. The clean one and unlimited class.

[@glennnicholls8510]

Great video. Thanks GCN. I'm all about numbers and data so more like this please. I love Ollie's enthusiasm for this kind of thing.

[@johnglavey808]

Been wondering all this week (TDF) about this stuff, thanks.

[@Ricketik65]

Really interesting, thanks! Joop Zoetemelk always said: "The Tour is won in bed", meaning you need enough sleep to recover. This video kind of proves his point, like he himself did by winning the Tour in 1980.

[@martinh2783]

When I had fractures in a few ribs the nurse who checked my puls, saturation and heart rate looked a bit nervous and asked if I train a lot (which I don't do, max 3 days a week and not a lot of cardio). Apparently I had a hr of 46 b/m and good saturation after a night of crappy sleep and a lot of pain. That made me feel a little bit better.

[@Roboturnerlol]

i had a similar scare, i visited my dad in the hospital and hadn't eaten very much that day and then proceeded to share half a dozen cigarettes with my brother (stressful day), i ended up fainting in my dads room so they set me up across the hall and took my vitals, i heard one of them saying my heart rate was super low, i had to tell them that my resting HR was normally in the 35 range and several nurses immediately let out a sigh of relief

[@tarajones-legros3661]

Loved this video. Seeing what is physiologically possible is both inspiring and humbling. Keep them coming!

[@eski2250]

Fantastic video, Ollie! What an insight into how the pro’s bodies handle the exertions of a grand tour. Love it! 👍🏻👌🏻

[@ViveSemelBeneVivere]

Kudos Ollie for explaining these behind-the-scenes superhuman details. Love the hair. Really!

[@davidf2281]

The hair! The hair! Oh, the humanity!

[@blackjackprofit4379]

1:22 Do you want thick hair? kzbin.info/www/bejne/eJuQd52Kopt_hpY

[@ViveSemelBeneVivere]

Now I can't undo imaging that zeppelin.

[@craighoover1495]

I appreciate your covering this. I have been a WHOOP user for about a year. It was indeed interesting to see what "the numbers" were for this TDF group. Knowing how well recovered I am helps me decide how hard or long I might want to work on a given day. I am learning to try to optimize each day. WHOOP data can also be displayed on STRAVA, a recent and welcome feature. If you capture your ride data to include heartrate and wear a WHOOP strap you will get duplicate information. I just delete the WHOOP data for that workout so that the feature in STRAVA that tells you your fatigue level and form are not skewed by the duplicate information from the WHOOP for the same ride. Since I also swim and lift weights the WHOOP will show this information in STRAVA too. A hard day lifting can cause poor recovery in the next day or even longer. Sore muscles also tell me this. It is gratifying to see a good recovery after a good bike ride or swim.

[@spaynneuter]

Great of EF to share their data. Truly is fascinating.

[@mickydix]

Please tell me the hair product you used. I also want an antenna on my head.

[@MariekeBrinks]

There can never be too much of this in depth content, thanks.I haven whoop to, and for me a half tour etappe is 20 strain :)

[@22fret]

There's one thing I'd really like to understand: I am 47, turning 48 in July, and my resting heartrate is between 40 and 43 with a max. of a tad over 180, my lung capacity is 7,81 litres - so basically I have Indurain's bellows - but still I am quite unable to make the best of it. I've been riding for about 35 years now and according to my physical data I should be an animal on two wheels. But clearly I'm not. I struggle to average more than 30 kph on solo rides over 25 kms and I am utterly hopeless in the mountains (101 kgs @ 1,96m). Yes, there were years of inactivity in between, which probably adds to the problem (and perhaps that I restarted just 2 months ago) but I am seriously asking myself if there is something wrong with me. Maybe bad training methods? Age perhaps? 10-15 years ago I was able to average between 32 and almost 35 kph on solo rides up to 50 kms...

[@3sportim]

Outstanding information and very well planned to wire up the EF Team!

[@crnkspinnr5863]

it's called youth, that's where the bounce back comes from. The machine is so adaptable at that point in time it can take the the abuse. I would like to see a comparison with Powless and Valverde.

[@michaeljames2250]

I know this is 2 years old but enjoyed it. Answered some of the questions I had about tour riders. Thanks,

[@maxkarl4852]

Really interesting stuff ! Ollie you're good

[@tunaficiency]

The big question is what kind of budget does gcn spend on hair products probably equivalent to the military budget of some smaller countries

[@Strange_Brew]

Thank you Professor Ollie!! Keep up these type videos. I so enjoy them being a fellow science nerd....

[@commandershepard6189]

I've been cycling for almost two years and my resting heart rate is 44 bpm. I live in Scottsburg Indiana US and there are plenty of hills around. My favorite one has a peak grade of 22% and average 15.5% for .38 miles. If any one lives locally, they should ride here. Some routs here will keep your heart rate above 160 no mater what condition your in.

Thank you, David Lynch

[@gregmundis9840]

Love the deeper physiologic dive! Keep em coming

[@joefrisbie1594]

As one who straddled the old school method of train hard and race harder. Thank you Emil Zatopek. I find these numbers fascinating. Late in my career VO2max testing was the thing. So where do I stand in comparison. 15.7% body fat, 73 VO2 max and a resting pulse of 48. So with better training and diet say 5% body fat where would my VO2 be and there for my resting would have been how much lower? PR mile 4:24, 3 mil3 15:03, marathon 2:36. What could have been???

[@christrammell-strategistla6211]

Great job sharing the physiology of the tour rider in this format. You did a fantastic job looking at heart rates, recovery, sleep, and other recovery variables. What I would’ve loved to have also seen included is caloric intake in between rides. And weight loss during a particular stage. As a triathlete to transfer half Iron Man, I lose as much as 122 pounds, 32 ounces of fluid on a long run where I can’t drink fluids at the same rate that I could on the bike. Anyway to share some of the caloric and fluid intake loss, replenish, and maintenance data? Chris from Long Beach 🏖 CA. 👍🏼💯🏃‍♂️🚴🏼‍♂️🏊🏼

[@brenoamparo619]

Science is just fantastic ! Please keep doing these kind of videos. Amazing data ! They are really supermen

[@skiorsnowboard]

This might have been one of the coolest videos on the channel

[@DejanOfRadic]

I would love to get the stats on waiters......we work 11 hour shifts without sitting down even once, without food, and under extreme stress. I did a 6 day ride covering about 800km, and at no point did I feel as fatigued as I do working a weekend as a waiter

[@jbvin6]

Very informative and detailed. Good work.

[@AGole24]

Loved the in-depth video and the data shared herein, would certainly would like to see more videos like these.

[@drewmathews12]

Please analyze Whoop / HR data for races going forward! So interesting and insightful

[@felipethomas3828]

Love how one part of Olli’s hair is just bouncing around like an antenna😂

[@fed9096]

the 2022 tour just started and watching this video again makes one realize that these athletes are not human! I would find it interesting to know what foods they're eating and when throughout the tour, how many calories etc..also, how did covid rules affect their training..maybe in another video? thanks for the great content!

[@tommassey28]

Interesting insights with data too! Fair play to ef for releasing the stats!

[@pretzelhunt]

Thanks for doing this; it was assumed by me for many years, but handy to hear someone Doctoral discuss it, with a cycling bent.

[@drumevolution]

VERY interesting video! Thanks!!

[@chasepalpatine170]

Super interesting. Really enjoyed listening to the impacts of a grand tour on Pro’s.

[@ninaanderson9016]

Yes please, more like this would be fab.

[@marcelomalta3640]

Excelent video. These guys are supernatural... Amazing. 👍🚴🇧🇷

[@douglaspate9314]

Totally fascinating. I loved it! A big thumbs up!!

[@habana6595]

Loved this video ! So cool to finally see all those numbers !

[@66numero]

Talking about sleep value in sports. There is the example of Nikola Karabatic, one of the best Handball players in the world with an extraordinary longevity, still being international and professional at the age of 39. He has a very strong sleep discipline (no phone screen after 21:00, sleep at 22:00 at the latest). Outside his outstanding capacities, this is one of the key factors brought up to explain his longevity.

[@rotano]

these videos are amazingly well done - bravo

[@ramaananda5035]

Great job on presenting relevant & cutting edge scientific physiological metrics! This was one of your most interesting & compelling presentations on science & cycling that you have made. You are becoming the Niel deGrasse Tyson of GCN!

[@AllIsWellaus]

I enjoy listening to Ollie. Somehow his enthusiasm collectively comes across more genuine.

[@GCNuser123]

i do genuinely find this data fascinating! 🤓

[@irenesupica7449]

Will be more interested in Powless this year after listening to this program! Very interesting information. Thanks!

[@skyfox9861]

This is amazing how good they are! Thank you for video!

[@pettervikman1280]

Really interesting! More stuff like this would be great. The part about the sleep is food for thoughts.

[@jayshockey5461]

Great stuff Dr Ollie👏🏻👏🏻👏🏻👍🏻