Lance Armstrong wasn't kidding when he said he was making a cycling comeback. He's got one hard body to prove that he's knee deep in Tour de France training, and the 37-year-old tells Men's Health magazine all about it.

Armstrong's workouts, which make him certain he'll finish on top for an eighth win, have gone high-tech. "Back in the day, people trained on just their feelings," he says. "Now you have heart rate, altitude, lactic acid all measured on one unit." He also has an added step in the training game this go-round.

Armstrong has vowed to submit to a program of blood testing to prove he isn't using performance-enhancing drugs. Sounds like he's the real thing -- what do you think?