Is Marijuana A Performance Enhancing Drug?

"Andy Cross/The Denver Post via Getty Images Colorado resorts don't allow anyone to consume marijuana while on the slopes, but we hear that sometimes those rules are broken. When Olympic snowboarder Ross Rebagliati tested positive for a small amount of marijuana in his blood at the 1998 Japan games, his first-place finish was temporarily called into question. But THC, the main mind-altering ch ...