While you sleep, your brain washes itself clean of the debris from a day of thinking.  Your brain cells actually shrink by 60% so they can more easily be washed of daytime toxic waste buildup. 
 
“Scientists say this nightly self-clean by the brain provides a compelling biological reason for the restorative power of sleep,” according to a news article.
 
Of course we have all heard the stories about sleep-deprived lab animals dying in a few weeks.  This research may tell us why.
 
So, how clean is your brain?




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