i think probably just the cortisol and the growth hormone alone may set you on a path towards cardiovascular disease
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.
i think probably just the cortisol and the growth hormone alone may set you on a path towards cardiovascular disease
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Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
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as soon as you start to undersleep an individual that fight or flight branch of the nervous system starts to ratchet up when that increases you start to see or perhaps the reason why it increases is that you get a greater amount of adrenaline release you get a high spiking in levels of cortisol you get a blunting in growth hormone
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.