Sleep tracking

How is it possible to record 4 rem sleep stages but only one deep sleep stage, from what I’ve know you must go through all 4 stages each time to get to rem sleep ?

Top Replies

scarboroughjohn over 5 years ago in reply to Craig-au +1

Accuracy requires EEG monitoring! This does an amazing job of extrapolating very rough data, into stages of sleep there is no way it can be accurate. Just on average, statistically, a close approximation…

All Replies

0 Former Member over 5 years ago

hi,

usually at the beginning, I have a deep sleep of 30-60min, after that only light alternate with REM.

rarely I have two deep periods...

robert

0 NMT over 5 years ago

I experience exactly the same with the very occasional morning where there is 2 deep sleep stages recorded. Sleep stages are very difficult to track effectively using the sensors on the watch, I’m not sure I believe any of the sleep stage data that wearables give out.

0 Craig-au over 5 years ago

Yeah I’m not sure how accurate it is, I don’t think I’m awake as many times as it shows either, probably just moving.

0 scarboroughjohn over 5 years ago in reply to Craig-au

Accuracy requires EEG monitoring! This does an amazing job of extrapolating very rough data, into stages of sleep there is no way it can be accurate. Just on average, statistically, a close approximation for most but not all people. Take it for what it's worth, interesting not diagnostic.