Physical fitness is not only one of the most important keys to a healthy body, it is the basis of dynamic and creative intellectual activity.
http://well.blogs.nytimes.com/2014/06/25/for-fitness-push-yourself/?_php=true&_type=blogs&partner=rss&emc=rss&_r=0
http://well.blogs.nytimes.com/2014/06/25/for-fitness-push-yourself/?_php=true&_type=blogs&partner=rss&emc=rss&_r=0