Armstrong back on bike, backs off on sex

He'll be no sex champion now that he's come out of retirement and has committed to training for his eighth Tour de France. But Lance Armstrong sure hopes to champion another cycling win, adding to his record of seven consecutive first-place Tour finishes. Let the training begin. The sex? On the sidelines for now.

The fact is, says the 36-year-old elite athlete, cancer survivor, and celebrity hook-up guy, that if he's riding his bike five, six, seven hours a day, he just can't be a winner in the sex department. "You have fatigue, low testosterone and a lower libido," says Armstrong.

Imagine what he will have, though -- strength, endurance, and an impressive level of fitness as he begins his quest for what might be one of sport's biggest ever comebacks.

Live Strong, Lance. Live Strong!