A hormone that peaks during the night and promotes sleep is ________.

Name: A hormone that peaks during the night and promotes sleep is ________.
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Melatonin is a hormone secreted by the pineal gland in the brain that is responsible for regulating sleep-wake cycles. The production of melatonin is influenced by the amount of light and darkness in the environment, with levels peaking at night and declining during the day.

A Hormone That Peaks During the Night and Promotes Sleep