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 definition of chronically high cortisol is somewhat elevated or elevated cortisol in the morning, but especially in the hours before sleep. And I I actually have a theory that is not a stretch that one of the main reasons why it's so detrimental to our mental and physical health in the short and long term is because of the ways it disrupts 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.
Sleep disruption leads to elevated cortisol levels during the day, which diminishes the ability of tackling larger exercise loads.
if that cortisol level stays high at night it's very difficult to get the good sleep that you need
so what you end up doing is having this kind of chronic mid to high level of hypercortisalemia and that is leading to all of this cascade of biology that is non-optimal
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.