Melatonin is a hormone being produced by small gland in the brain called pineal
gland that helps control sleep and wake cycles. It is also called the sleep
hormone because it gives signal that it’s time to sleep. People
also used this hormone to adjust the body’s internal clock. It is the hormone
that released in response to exposure to sunlight. When the sun sets and night
falls, the pineal is activated and begins to vigorously produce melatonin. The
amount of melatonin tends to rise as night falls, peaks at midnight, and falls
again as the sun rises. It means that it produced more when darker and when the
lighter it is; the less melatonin is produced.
