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Posted by Brian K. Garvey on September 29, 1997 at 13:44:15:In Reply to: reasons for sleep posted by robert l self on September 25, 1997 at 19:12:31:
Some recent research suggests the first physiological reason for sleep.
The glial cells of the brain store glycogen which fuels brain cells. Normal waking brain
activity depletes the glycogen; sleep restores it. This implies that sleep is the
body's way of taking the brain "off line" to recharge the glial cells.
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