Date:   11/6/2007 10:30:35 PM ( 17 y ago)
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URL:   https://www.curezone.org/forums/fm.asp?i=1037311

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The daily drive for sleep appears to be due, in part, to a compound known as adenosine. This natural chemical builds up in your blood as time awakens increases. While you sleep, your body breaks down the adenosine. Thus, this molecule may be what your body uses to keep track of lost sleep and to trigger sleep when required.

An accumulation of adenosine and other factors might explain why, after several nights of less than optimal amounts of sleep, you build up a sleep debt that you must make up by sleeping longer than normal. Because of such built-in molecular feedback, you can’t adapt to getting less sleep than your body needs. Eventually, a lack of sleep catches up with you.
 

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