The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
it's very rare that you ever go directly into REM sleep there are only two reasons when that seems to happen the first is a clinical condition called noopsy where you can have sleep onset REM sleep and very rare the second is if you are horrifically deprived of REM sleep night after night after night
Every Sunday: the week’s new conflicts and verdict changes — and nothing else.
Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
Would love a "what would change this verdict" RSS feed. Sign me up if it exists.
you will have to go through 3 to get to 4 you have to go to 3 to get to 4 you have to go from 2 to get to 3 to get to 4 with the exception of probably let's see two examples one is pathological if you suffer from narcolepsy one of the things that typically happens is that you go from being awake straight into REM sleep so to sort of finish the 90-minute cycle and this will make sense you go sort of stage 1 to stage 2 stage 2 3 3 4 then after out 70 minutes you'll rise back up into stage 2 and then finally you'll pop up into REM sleep and then you'll have a short REM sleep period and then you'll go back
if you suffer from narcolepsy one of the things that typically happens is that you go from being awake straight into rem sleep
10 minutes of bright outdoor light within the first hour of waking anchors the circadian phase and improves sleep onset that night.
Morning sunlight exposure shifts the cortisol awakening response forward, improving daytime alertness.
Long-term morning sunlight reduces age-related macular degeneration risk.
Sleep regularity predicts all-cause mortality more strongly than sleep duration.
Tracking deep sleep on a wearable accurately reflects EEG-measured slow-wave sleep.
Caffeine has a half-life long enough that consumption after 2pm measurably degrades deep sleep in slow metabolizers.