The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
when we're awake your brain wave activity can be going up and down maybe 20 30 40 times per second it's very fast and frenetic it's actually very chaotic electrical brain activity but as we're going into these lighter stages of sleep then the brain starts to slow down and at that point in stage two nonrem it's maybe going up and down just four to eight times per second
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.
the brain now goes back down and it's speed of of oscillation of going up and down is maybe just one or two times per second it's incredibly slow... the size of the w waves is almost quadruple maybe 10x the size of the brain waves when you are awake
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.