'The Biggest Loser' Contestants Talk About Staying Skinny (VIDEO)

Michael Ventrella -- the winner of 'The Biggest Loser' -- appeared tonight on 'Larry King Live' (weeknights, 9PM ET on CNN). The reality show champion discussed the difficulties of keeping the weight off, now that he's no longer surrounded by personal trainers.

Ventrella lost 264 pounds: the biggest weight-drop ever on the show. He talked with Larry King -- and was joined by Ashley Johnston, Michael's friend and the runner-up on 'Loser.'

Michael said that even though the show was over, his goal of continued weight loss wasn't complete. He and Ashley talked about how they still want to exercise and "get really toned." Trainer Bob Harper appeared along with them; he said that the most important thing was to be healthy in general, and to not fixate on the number of pounds lost.