CHICAGO (AP) -- One of the largest studies of its kind shows just how sluggish American children become once they hit the teen years: While 90 percent of 9-year-olds get a couple of hours of exercise most days, fewer than 3 percent of 15-year-olds do. ...more

July 16, 2008

One of the largest studies of its kind shows just how sluggish American children become once they hit the teen years: Although 90 percent of 9-year-olds get a couple of hours of exercise most days, less than 3 percent of 15-year-olds do. ...more

July 16, 2008

Physically active people have cells that look younger on a molecular level than those of couch potatoes, according to new research that offers a fundamental new clue into how exercise may help stave off aging. ...more

January 29, 2008

More U.S. adults are getting physical - or at least that's what they're telling researchers. ...more

November 23, 2007