Deep Sleep measuring

My Fenix 5 doesn't measure deep sleep properly, telling me i have tons of REM sleep without any deep sleep, which doesn't seem to make much sense.

0 fishyweb over 3 years ago

I'm not sure how to even know if it makes sense or not.

0 3845838 over 3 years ago

I have done some research, and the amount of deep sleep you get is proportional to the REM sleep. My dad and sister get an average of 2h deep sleep every night, while my watch measures 1h sometimes, when it doesn't, it simply tells me i didn't have any deep sleep