Older Athletes Have a Strikingly Young Fitness Age - The New York Times

http://well.blogs.nytimes.com/2015/07/01/older-athletes-have-a-strikingly-young-fitness-age/?hpw&rref=health&action=click&pgtype=Homepage&module=well-region&region=bottom-well&WT.nav=bottom-well&_r=0