Michael says when he lost the weight the first time around, his approach to weight loss was flawed, which was why the pounds came back so quickly. "I was on a diet for 19 months, and I had hit my goal. I wanted to be less than 200 pounds," he says. "So like any person who had a goal...I won the gold medal, and the next day I didn't have to get up and train, so I relaxed. Going on a diet means someday you're going to go off a diet. You can't be on a diet your whole life. That's what I've learned."