Mark Sisson, 57: It's never too late to get ripped
When Mark Sisson ran marathons, he saw what it did to his body.
"My training got to me so early," said Sisson, who qualified for the 1980 Olympic Trials -- "my goal in life," he called it -- but couldn't compete because of "debilitating" injuries. "I caved at the age of 27 or 28."
As general secretary of the International Triathlon Union years later -- when he oversaw drug testing -- Sisson noticed it again.
"I realized that the reason athletes use the supplements, ...
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