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| Posted: 30 Mar 2006 21:02 | ||
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Posts: 18 Join Date: Mar 2006 |
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| Melatonin is a hormone made by a part of the brain called the pineal gland. Melatonin may help our bodies know when it's time to go to sleep and when it's time to wake up. During the day the pineal is inactive. When the sun goes down and darkness occurs, the pineal is "turned on" by the SCN and begins to actively produce Melatonin, which is released into the blood. As a result, Melatonin levels in the blood rise sharply and you begin to feel less alert. Sleep becomes more inviting. Melatonin levels in the blood stay elevated for about 12 hours - all through the night - before the light of a new day when they fall back to low daytime. For More Info | ||