Plot Synopsis

FIT TO FAT TO FIT is a one-hour reality series that follows 10 personal fitness trainers from across the United States 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. During the weight gain process, these elite trainers document the radical effects of watching their healthy bodies deteriorate. Everything from their mental stability and physical energy to their personal relationships are challenged. After four months of gaining weight under medical supervision, each trainer rejoins their client and together they begin a four-month transformation from fat to fit. At the end, there is a final check-in to reveal whether or not each trainer and client reached their weight loss goals. Each 60-minute episode features a different trainer/client combination, including: trainer JJ Peterson and client Ray Stewart; trainer Steve Pfiester and client Tasha Reiss Cruz; and more.
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On Monday, January 8, 2018 from 6pm-Midnight ET/PT, Lifetime premiered the entire six-episode second season of FIT TO FAT TO FIT as a six-hour marathon. Led by professional fitness trainer Drew Manning, who in 2012 sought to bridge the gap between him and his overweight brother-in-law by purposely gaining 75 pounds to better understand the stigma and difficulties of weight loss, four new trainers embark on Drew's same challenge. Spouses, friends and sisters in California and Arizona partner up -- one of them a personal trainer and one of them who wants to shed pounds -- agree to a revolutionary journey of transformation. Once reluctant to eat any processed food, Jessi is now getting comfortable with her newfound diet of junk food while Jeremy enjoys the benefits of his new, bigger wife. Willie has to make the toughest decision of his life about his health and has to break some heartrending news to his friend Quincy. Things aren't going well for Felicia and Toni, as Felicia battles depression in the struggle to gain weight and Toni doubts her sister's commitment to the experiment. Eric's constant eating puts stress on his marriage and Lori is in danger of sliding deeper into eating badly. New trainer Cary bursts onto the scene on a mission to help her friend Parneille get her confidence and career back on track. At the end of the marathon, it is revealed whether or not each pair reached their weight loss goals.