The BEST seasons of Fit to Fat to Fit

Every season of Fit to Fat to Fit ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of Fit to Fat to Fit!

A groundbreaking series that follows personal fitness trainers from across the country as they undertake the most extreme weight-loss experiment ever: by forcing themselves to gain weight, they aim to better understand the struggles of their obese clients as they lose the weight together.