Sleep helps brain stay fit by clearing waste

[riky]

Sleep helps brain stay fit by clearing waste

<p><a href="http://news.yahoo.com/sleep-helps-brain-stay-fit-clearing-waste-085741645.html"><img src="http://l3.yimg.com/bt/api/res/1.2/aY6BdMDee0d6qekFLgPfhA--/YXBwaWQ9eW5ld3M7Zmk9ZmlsbDtoPTg2O3B4b2ZmPTUwO3B5b2ZmPTA7cT03NTt3PTEzMA--/http://media.zenfs.com/en_US/News/US-AFPRelax/shutterstock_58.4af44170015.original.jpg" width="130" height="86" alt="New research offers answers to explain why people spend a third of their lives asleep." align="left" title="New research offers answers to explain why people spend a third of their lives asleep." border="0" /></a>Like a janitor sweeping the halls after the lights go out, major changes occur in the brain during sleep to flush out waste and ward off disease, researchers said Thursday.</p><br clear="all"/>

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