Exercise may cut risk of 13 cancers, study suggests

Working out for even a couple of hours a week can shrink your risk of some of the most lethal forms of cancer, researchers say

From: http://redirect.viglink.com?u=http%3A%2F%2Fwww.cbsnews.com%2Fnews%2Fexercise-may-cut-risk-of-13-cancers-study-suggests%2F&key=ddaed8f51db7bb1330a6f6de768a69b8