Exercise Fights Cancer

One more benefit of exercise. As close to a "silver bullet" as one is likely to find. And it is nearly free.
http://www.nytimes.com/2008/08/14/health/nutrition/14fitness.html?_r=1&adxnnl=1&oref=slogin&adxnnlx=1218716635-H0lSJmQwokQsrAoQ/avGhA