You participate in a sleep study at a university clinic. The researchers measure your body chemistry while you are sleeping. Which hormone do they find follows a circadian rhythm and peaks just before you wake?

Question

Quizplus · Accepted Answer

Cortisol is a hormone that follows a circadian rhythm and typically peaks just before waking up in the morning. Melatonin, on the other hand, is a hormone that peaks in the evening and helps to promote sleep. Growth hormone and prolactin also follow circadian rhythms, but they do not necessarily peak just before waking up.

You Participate in a Sleep Study at a University Clinic