the cerebral war is going to be won and lost on average for the average adult every 90 minutes and then it's going to be replayed every 90 minutes and that creates the standard cycling architecture of sleep
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.
the cerebral war is going to be won and lost on average for the average adult every 90 minutes and then it's going to be replayed every 90 minutes and that creates the standard cycling architecture of sleep
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.
So you'll have non-REM, and out of non-REM you'll have stage one, stage two, and then what's called slow wave sleep. And then you will switch over into what's called paradoxical sleep or REM sleep, and you will go through five of those cycles over the course of the night.
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.