It's been six years since Patrick House headed ... and I was gaining weight every year," the season 10 winner, 33, tells PEOPLE. "Had it not been for Biggest Loser, I could be 500 lbs.

The Season 10 players have finally arrived on The Biggest Loser ranch and they meet with Ali. She tells them they should be proud for making it this far, but now the hard part is staying on the ranch.