i suggest all people who sparingly choose to ruin there body with cigaretes, liquor, drugs, weed out of the bong is ok, but point is people who mess up there bodies should workout double time to purify themselves and keep possible cancer cells at bay. i know of a cyclist that has cancer that is is great shape and is BEATING cancer by working out 2 times a day!!!!!!!sometimes its called mind over body but I say BODY OVER MIND