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.
It's very important that that pulse of cortisol come early in the day, or at least, early in your period of wakefulness, I say that because some people are waking up at 8:00 p.m. and are sleeping all day, but it's very important that that pulse of cortisol occur early in the day and that it happens all at once, it sort of sets a rising tide of cortisol in your system.
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.
So when you wake up in the morning is when that cortisol pulse takes off, and something else important happens, a timer is set in your body and in your nervous system that dictates when a different hormone called melatonin, which makes you sleepy, will be secreted from a particular brain region, so let's talk about that.
When you wake up in the morning, you wake up because a particular hormone called cortisol is released from your adrenal glands... There's also a pulse of some... epinephrine, which is adrenaline, from your adrenals and also in your brain, and you feel awake. Now, that pulse of cortisol and adrenaline and epinephrine might come from your alarm clock, it might come from you naturally waking up, but it tends to alert your whole system in your body that it's time to increase your heart rate, it's time to start tensing your muscles, it's time to start moving about.
And speaking of the adrenals, that A in the HPA are the adrenals. You have two glands that sit above your kidneys and your lower back. They release different hormones and other types of chemicals into the body. And the two main ones that you need to know about today are adrenaline, also called epinephrine, and cortisol. Both of those are so-called stress hormones, but they're not always involved in stress. They're also involved in waking up in the morning uh when you arrive when you excuse me when you rise from sleep.