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 other thing, and this is perhaps the most important thing for everybody listening to this really to think about is QQRT, which is quality, quantity, timing, excuse me. Quality, quantity, regularity, and timing. QQRT. QQRT. Which is an acronym coined by the great Matt Walker, author of the book Why We 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.
I've conceptualized what I would describe as the four macros of sleep that there are you know we think of diet that we've got three macros fat protein and carbohydrate for me sleep actually has four macros and you can remember this by the acronym qqr T and it stands for quantity quality regularity and timing
we also talk about a very specific formula that everyone should know for themselves called qqr T which is an acronym that stands for Quality quantity Regularity and timing of sleep
which is the qqr formula the quality quantity regularity and timing of your sleep four variables that combine to determine whether or not your sleep is optimized for you and thereby providing the most restoration and Improvement to your mental health physical health and performance
he talks about the quality quantity regularity and timing qqr T quantity quality regularity and timing of your sleep being the four key features of your sleep to try and dial in
so think about the quality the quantity the regularity and the timing once you dial those in everything is much much better
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.