But one of the reasons why we have such a grogginess, it's called sleep inertia when we wake up out of the wrong state which is deep slow wave sleep, is because-- I liken it to like a washing machine cycle.
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.
But one of the reasons why we have such a grogginess, it's called sleep inertia when we wake up out of the wrong state which is deep slow wave sleep, is because-- I liken it to like a washing machine cycle.
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.
that starts to happen around 30 to 40 minutes for most people but by cutting your nap off at 20 minutes you still get these nice benefits from a good chunk of healthy non-rem sleep but you're not going so far into the cycle so deep into your
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.