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Diurnal adrenal hormone cycles help regulate energy availability and mood. The figure is taken from NIH, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

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Cortisol hormone levels peak in the morning to promote waking

Diurnal adrenal hormone cycles help regulate energy availability and mood

Cortisol follows a natural 24-hour circadian rhythm known as the cortisol awakening response. Secretion by the adrenal cortex spikes within thirty minutes of waking to mobilise blood sugar and raise alertness, before gradually declining toward evening.

Where this comes from

NIH

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Tags: cortisol, hormones, circadian

Cortisol hormone levels peak in the morning to promote waking: the short answers

Where does this come from, and can I check it?: Diurnal adrenal hormone cycles help regulate energy availability and mood. The figure is taken from NIH, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a human body fact?: Yes. It sits on the Human Body shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.