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Old Apr 09, 2008, 08:55 PM
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Perna Perna is offline
Pandita-in-training
 
Member Since: Sep 2006
Location: Maryland
Posts: 27,289
Not withdrawals, it releases beta-endorphins, is "addictive". It's not that you feel bad if you don't do it, you feel "better" if you do.

http://www.mayoclinic.com/health/sel...775/DSECTION=1
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