8 ms·
If they can't detect when you're not in REM sleep and wake you up at that point, what's the point of the device?
by tudorachim 15y ago
If they can't detect when you're not in REM sleep and wake you up at that point, what's the point of the device?
- nater 15y agoAs I understand it, grogginess is associated with waking from deep sleep (no movement), not REM sleep.