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.
REM sleep is really where we establish the emotional load but where we also start discarding of all the meanings that are irrelevant. And if you think about emotionality, a lot of overemotionality or catastrophizing is about seeing problems everywhere. It's very important in order to have healthy emotional and cognitive functioning that we have fairly narrow channels between individual things.
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.
what's happening in REM sleep is that we're forming a relationship with particular rules or algorithms. We're starting to figure out, based on all the experience that we had during the day, whether or not it's important that we avoid certain people or that we approach certain people, whether or not it's important that, when we enter a building, that we go into the elevator and turn left where the bathroom is, for instance-- these general themes of things and locations and how they fit together. And that has a word. It's called meaning.
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.