How do I fix inaccurate resting heart rate calculations on Apple Watch Series 11?

Is anyone else having seriously off resting heart rate calculations since getting a new watch? I had the SE and upgraded to the series 11 in September when it rolled out. Ever since then it is calculating my RHR sometimes up to a dozen times a day and when I am still active. It’s driving my RHR data up and it’s not accurate as I have other apps that do log it correctly. It’s making me frustrated. I’ve tried a reset and that didn’t help. Nothing else has changed other than the new watch. So no new routines, medications or lifestyle changes that would contribute. Anyone else having this problem?



[Re-Titled by Moderator]

Original Title: Resting heart rate issues

Posted on Dec 2, 2025 10:38 AM

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5 replies

Dec 3, 2025 8:28 AM in response to LD150

Not anything like an exercise bike it just seems like since switching to the series 11 it’s recalculating my RHR so many times during the day that it’s not accurate. The SE version didn’t do this. My understanding is a true RHR is first thing in the morning upon waking. Now with the series 11 it seems like any time I am active it recalculates the RHR and giving me higher readings. My SE is still paired to my phone so I wore it overnight and today and so far it’s not recalculated numerous times which at this point the series 11 would have done that probably 2 or 3 times by now. Hopefully this makes sense what I’m trying to figure out why series 11 is recalculating RHR so many times a day whereas the SE did not.

Dec 3, 2025 2:42 PM in response to LD150

I don’t know that I’ve seen that before where can I find that? But I’m definitely noticing the SE today taking more normal measurements. The 11 was constantly saying my heart rate in general was super high in the 90’s when I’d just be sitting. And nothing was going on to trigger it. So all that data for the last 2 months has basically messed up all my other averages and shows things trending higher when in reality it’s not.

How do I fix inaccurate resting heart rate calculations on Apple Watch Series 11?

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