In addition to my Anti-cancer Diet and Vitamin D, I work out at the gym 3 days a week and take walks and/or lift weights at home 3 to 4 days a week. At the gym, I run 2 miles and then lift weights for an additional 60 to 90 minutes.

I also take numerous 6- to 9-hour hikes up mountains and into canyons, sometimes for 7 days in a row. The hiking may help ward off colon cancer, and I am a firm believer that running helps stave off lung cancer.