My triathlon buddies recently pointed me at this article from the March 18, 2007 edition of Parade Magazine.
What I find most remarkable in this article is:
(1) Aside from a few stem cells and brain cells, we our bodies replace about 1% of our cells every day, or put another way, replace our entire body every three months. I thought it took 10 years for this cycle.
(2) Our emotions are equal and in some ways even more important to controlling aging than exercise. “Exercising” our emotions with close friends and family can do as much to keep us young at heart as working out every day. Amazing!