What are the advantages associated with regular physical exercise?

http://www.google.com/#hl=en&source=hp&q=advantages+of+regular+physical+exercise&aq=f&aqi=&aql=&oq=&gs_rfai=CU2MSWCh9TJTVNJmMhQSexZWkBQAAAKoEBU_Q04a8&pbx=1&fp=93c3c78db929eee0

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