I've been using Garmin Connect for a week, and I have yet to see any REM sleep registered, yet I know I've been dreaming.
Yeah, the FR235 does not support REM.
Which watch do you have? Not all of them support REM.
Forerunner 235. And that would make sense1
My Daughter has the Vivo move HR & it's not recognising sleep at all , she wears it every night while sleeping ...