I am sharing the screenshots of my workout, one measured by my h10 polar strap and the other by my whoop band… this was a zone2 workout and as you can see, while the h10 data is constant and stays well within the zone range, my whoop constantly drops to ridiculously low HR level to then catchup… this ends up registering a third of the time actually spent in zone 2…
I have tried everything, from wrist to bicep bands, from inner to outer placements of the sensor, etc… and i always get the same… it is very frustrating that after three years being a member i still have to deal with this nonsense…
dont get me wrong i love whoop and all the insights you get from it, but one has to question the accuracy of the data/insights you get when not even half of your cardio workouts has the correct data..
Same thing here. I trust the data from my chest strap in combination with my sports watch. Bicep band comes closer to the chest strap but is still inaccurate. With this all other metrics are off like strain, recovery etc.
I even question HRV and RHR now. After my subscription has expired I will definitely not renew. Such a device is useless to me. The only thing is the AI coach that I use when I need information.
Journal also is fairly useless. It points out things as negative/positive that everyone knows by himself that it has a negative/positive impact. Blood pressure is basically a repetition of cuff measurements.
I wonder what elite athletes do with this device. They probably wear it because of sponsorship. If ambitious hobby athletes already doubt the data what might high level athletes think of it?
I also have the problem that the heart rate is almost never consistently correct. Support just keeps telling me to pay attention to the fit and position of the Whoop. But I don’t have these problems with Garmin watches—even the Apple Watch is much more consistent.
If they can’t do it properly themselves, I don’t understand why I can’t pair it with another device that I know has accurate readings. It’s OK to use an additional HRM, but it’s not ok the get wrong data.
I thought I had bought a professional device for athletes. It’s a pity for a product that actually relies on its data—it makes you wonder which other measurements are also incorrect.
Absolutely agree. I also use a chest strap (Polar H10) and can’t take WHOOP seriously when it comes to heart rate data accuracy. Even during relatively stable workouts like cycling - where there’s minimal wrist movement - WHOOP still shows significant discrepancies. This highlights the inherent limitations of optical sensors and the impact of sensor placement. The wrist is peripheral and less reliable for accurate HR monitoring, no matter how advanced the algorithm.
What’s more concerning is that even new-generation Garmin watches, using the same optical principles and worn on the wrist, deliver noticeably more consistent and believable results. At this point, WHOOP feels more like a lifestyle accessory than a serious physiological tool.
Yes, they invest heavily in marketing - no surprise there - but it’s becoming increasingly obvious that many long-time users, myself included, are growing skeptical. From what I’ve seen personally and across multiple forums, the volume of negative feedback is now outweighing the positive. That should say something.
I’m having the same issue. I forgot my Apple Watch this morning while running. I was WALKING and the Whoop had my HR at 160. Only when I’m running sprints does my HR gets up that high. So, I took it off my wrist and put it in my bra. then it dropped my HR to below 100 when I was running.
It’s just so frustrating.
