I replaced a watch recently (due to sticky buttons issue), and when the new one arrived updated it to 5.5 firmware version that was just released.
Not sure if related, but since then the stress manual measurement displays "check watch fit" for about 90% of the time.
This despite my best efforts to wear the watch according to the manual instructions. I never got this message on the previous watch.
Yesterday, while I used the meditate activity the heart rate data went completely crazy, even though before it was just fine.
It included some period of ~250bpm heart rate. After the activity I noticed it was scored 5 aerobic + 5 anerobic (for sitting down steady for 30 min!!!) and affected the training focus + added 4 days to recovery time!
I deleted the activity (from the watch, phone, connect) yet the training focus and recovery time remained the same even the next day,
recommending me to go easy with the high anerobic activity (which, currently, I don't do at all).
How to fix it? restoring the watch to factory defaults?