The stress hormone cortisol in humans peaks at around ______, whereas the hormone corticosterone in rats peaks at around ________.

Question

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In humans, cortisol levels typically peak early in the morning, around 6:00 am, to help promote wakefulness and alertness for the day ahead. In contrast, in rats, corticosterone, which is a stress hormone analogous to cortisol in humans, peaks in the evening, around 6:00 pm, aligning with their nocturnal activity patterns.

The Stress Hormone Cortisol in Humans Peaks at Around ______