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.
if all I was doing in my sleep lab was recording your electrical brain activity and I was in the other room and I was just looking at your your brain waves as you go into REM sleep I would not be able to tell are you in REM sleep or are you awake why because the electrical brain activity is so similar when you are in REM sleep relative to when you're awake
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.
your electrical brain wave activity at the top of the brain the cortex looks almost identical to that which you have when you're awake which is stunning because you're not conscious you're lying completely still no presence of muscle tone whatsoever yet your brain seems to be just as on fire with electrical activity as it is when you're 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.