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Low levels of exercise can add years

Nov. 20: A new study says even low levels of physical activity can add years to your life. WDIV's Devin Scillian reports. A new study says even low levels of physical activity can add years to your life. WDIV's Devin Scillian reports. (NBC News)




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http://video.msnbc.msn.com/nbc-news/49897126/