Same here...I returned and got my money back! I was testing my heart rate with my chest strap through my Peloton and my apple watch and manual pulse check and these 3 were very close. The Whoop on the other hand was way out to lunch not to mention the crazy spikes up and down. Thanks for the KZfaq Video...confirms what I experienced!

absolutely underrated video, thank you so much for this video !!

When WHOOP was first described to me, I had the exact same conclusion as you and your friend. Sorry you were out all that $, but thanks for giving us the data. Great break down!

While I think this video is very good in concept, I think you make a lot of assumption errors about what these metrics are supposed to represent according to WHOOP themselves. The assumption that strain and recovery should be a negative correlation makes sense on the surface for example, but is most certainly an improper understanding of the metrics themselves. Recovery is based off of how well you actually recovered from the strain, more specifically it's really just a measure of how well you slept as it records its key metrics during sleep, not wake (a potential problem IMO, but not the one you address). You can heavily exceed your strain goal in a day and also have an extremely high recovery score if you get good, effective sleep; the two variables are not inherently correlated. WHOOP even clearly states in their strain section that it is ok and even good to exceed your strain goals as long as you have good recovery habits after. Every individual's recovery habits are going to be different, so making broad assumptions based on a sample size of 1 person is also already problematic in this context. Your body may simply recover very well because you have good sleep habits or sleep longer after a high strain day for example. I personally have an issue with WHOOP in that I think the names for some of the things they track can be confusing, but I think your key assumptions about these metrics are quite problematic. While I appreciate the effort of this video as I've been interested about WHOOP myself for a bit now and equally curious about their claims, I think this video definitely missed the mark in a lot of ways and I wish you would have done a bit more research. As anyone who deals with data knows, anyone can analyze some data and make some charts, it's the interpretation that is the most crucial and difficult aspect. You also don't seem to state how long you wore the strap for and what range you're including data from? Or at least I can't find it in the video. Since most of the metrics are inherently based upon your own personal baselines, I would have pretty major concerns if you included data from within the first two weeks of wearing the device in these charts. Once again, I appreciate the effort here, but as a researcher, I found it pretty difficult and at times frustrating to watch this video and have it be presented as an objective dismantling of WHOOP when you are making some pretty large errors in basic experimental design and analysis through most of the video. I'm not trying to be rude here, but I think you can do a lot better if your goal is to try to teach people about how to properly analyze and interpret data. As it is now, this video is not much better than most of these styles of "analytic" KZfaq videos that often underwhelm in the actual analysis and interpretation of the subject and lack much needed nuance. Once again, parts of the video were great and I loved the concept and effort you put into it, I just think there's some key things you overlooked that are worth considering in future content, especially when the average person watching these videos likely doesn't have a good grasp of how to properly interpret an r-coefficient or an effect size.

Can you do a video on the oura ring!

What are your thoughts on the Fitbit Sense 2 in terms of heartbeat sensor accuracy? also it has an cEDV sensor (continuous electrodermal activity) to measure stress via micro-sweating and such.

Awesome content Trent, keep it up!

Same experience with the inconsistent feedback and inconsistent hr data. Thanks for the video.

Think the real value of Whoop is in the community aspects. Guess could be worth it for groups, local clubs, etc if helps improve socialization. I cancelled also, as maybe its worth $5/month for me. Using Apple Watch and Athyletic instead. Also didn’t auto track my naps, and workouts

About the accuracy of the Whoop, I have used Whoop for almost 3 years now. Also, I always used a Garmin Fenix Next to it, and have the HRM Pro from Garmin. Garmin on the Wrist, and Whoop on the wrist are both off. But when I put the Whoop into the Pants or on the upper Arm, the measurements of Whoop and the HRM Pro only differ by around 3bmp on average and are simular to each other. So when I don't feel like wanting to wear the HRM Pro, for example on MTB tours, I connect the Fenix to the Whoop which I have usually in the Pants and trust the results. To be honest, I have used whoop so long now, that I can predict when I gone have a green, yellow or red recovery. I only just use it, since I still have credits until end of 2026 and hoping for some cooler Updates until then. The Strength trainer is useless as it is, the breathing stuff hidden away in the app, and I actually like the new Garmin since the Update way more than the Whoop app.

You should do a video on Apple Watch! Just curious if it also has the same issues with its health and fitness features

Whoop is a marketing company

incredible review, you deserve 100x your subs.

My whoop tracks my heart rate really, really well. I do wear it fairly tight, though, so maybe that is a difference. I wear a chest strap when I am on the bike, and it tracks within 1-2 bpm of the chest strap. Same with a soccer workout.

Thank you for this video!

Thanks for that! I find all reviews are so LOVE MY WHOOP but don't show proper data. It's an expensive thing to be giving the same data most watch can.

I disagree with your experience. Whoop has been a god send for me over the past 6 months. In terms of your recovery and strain correlation have you considered that there could be other variables?

Polar H10 is the gold standard for heart rate measurement

Thank you!

great review and really interesting to hear your experience. As a garmin user, I really was looking forward to the deeper insights. Initially it seemed really impressive but then I noticed that some activites strain score simply didn't make sense. A slow jog was recorded as a near max-heart rate effort. this was clearly wrong and my garmin epix was reporting a way lower heart rate. The final straw was when walks with my dog were repeatedly registering as a high strain activity. I simply couldn't trust the data and thats where it fell down - all the sophisticated modelling is based on questionable data, which then skews the recommended recovery. I've gone back to just using the garmin epix and taking more notice of the overnight HRV, which seems to be the main factor the whoop uses in determining recovery. Garmin have just added a new sleep coach feature as well which is more realistic in my opinion. It never recommends more than 9 hours sleep. Having tried to get a recommended near 10 hours the whoop recommended once, unless you are a sloth it is never going to happen.

I don't know.. you've got the data guy as far as heart rate goes, my suggestion would be to analyze it rather than give a subjective view? It looks like they correlated quite well just based on the data you gave. As far as the correlation of perceived effort vs actual, yes that is going to differ quite a bit between individual and individual, at a macro level there is no way that that measure is going to be completely precise. Personally, I feel that it tracks quite well, with the extremes being a better than the middle.

did you test wearing the whoop on different parts of your body? if yes, was there any difference? they suggest wearing it around your arm for more accurate measurements.

I love the idea of WHOOP. Being a data nerd myself I love the idea of being able to see what's going on in my body and how that changes over time and what's affecting it. But these sorts of insights mean nothing if the data being collected isn't even accurate or consistent. I think I'll hold out for 5.0 and wait to see what the accuracy is like on that and I'll just stick to my pixel watch and fitbit insights for now

The absolute numbers don’t really matter as long as this thing makes you more attentive towards your health related habits

love the beginning of the video :D

Excellent analysis, gained a subscriber 👍

Whoop whoop, another Trent video! 🎉

Just like how business stakeholders get hyped on data visualization rather than how caveats underneath.

How do you optimize your sleep environment? Bro I suck at sleeping and medical school is killing it…

WHOOPs, you earned a new sub! Thanks for not hyping it up like other youtubers!

totally agree! what is even more crazy is the amount of money they're asking for it, if you use it for 3 years u will be paying like $1000. A huawei band 8 will give you more for less than $100

So we can assume it's a subscription model for inaccurate data? Great:/

Great video, immediately on seeing the ad for it i thought that there was no conceivable way it would work the way they want it to / advertised

Great video. Was looking for a synopsis from some educated people. Plus that monthly sub is a scammmmmm. Thanks man!

I think its very very common the whoop starts off extremly inaccurate and useless then levels off. Really the only thing it offers is sleep tracker. Too much inaccuracies make the data almost useless.. the sad thing is you dont know exactly how and when its innacurete.

Great video!

I had exactly the same, it was ideal for me but was way too inaccurate

I'm using Whoop for a month free trial and once it arrived they got me with the whole 'the first month is for calibration', so I decides I'd use it for a couple of months, mainly because as said in this good video, it's fun to look at stats. But it's common sense to take it all with a pinch of salt. We are not in an information age sci-fi movie, wristwatch technology for measuring physical recovery performance is crude at best, at worst total snake-tech. Common sense, checking in, mindfulness, fatigue, performance. Whoop outsources all of that.

i've had Whoop about six months and I just couldn't believe how it measured my heartbeat during any activity. I run, strength training and bike ride and couldn't believe the garbage heart data i was getting. Whoop's strain is totally useless and forget about using chest strap. Sorry Whoop is a total garbage. The only nice thing about Whoop is that it has awesome app, but totally useless optical sensor to but in quality hr data. And pay for this every month is totally throwing the money out of the window.

Thank you, thank you, and one more time: thank you! For more videos that are not sponsored and marketing our minds.

So people would look Whoop mesures for years still trying to decipher what they mean.

Problem is, you forgot to measure your poop. That's the main metric to watch out for

Don’t think this is fair I’ve used a garmin on left hand and whoop on right and there basically identical

Good video bro

Why is he saying "wup" tho 😢😂

Great video, but this isn’t how HRV data works

You're just wearing it too low and too lose.

Comparing a chest strap to a wrist band for HR is wild.

Whoop changes my life. Things spot on as far as my experience. Matched to a chest hr strap and a garmin. They are all pretty close measures.

Wups

Today 3,4k views and only 97 likes (with mine). I guess people already subscribed to Whoop or are willing to believe the commercial joke

You talk about variables yet try to disprove the whole device by attempting to show the lack of correlation between Strain Target & Recovery and attempt to suggest that the only variable in the Recovery number is how far you were from the optimal Strain Target

Your whoop is loose … it’s not suppose to be 100% accurate … it’s a gauge for people that actually need it n have very little to no clue about the fitness parameters… question… does this not help in anything ?

Yeah the heart rate can be gamed in my experience (4 year user). I can stand and do a running/upward punching motion with my arms for 2 min and my heart rate will get to 180. 5 min and I can get to 200. I stop and barely feel like I've done anything, not out of breath at all. BUT I do love it for sleeping and overall accountability. Any other wearable recommendations would be appreciated!!