Fit to Fat to Fit

Fit for his whole life and a trainer for 13 years, JJ is known as "Superman" to his wife and kids. His overweight client Ray hopes that slimming down will boost his profile with adoption agencies and bring him and his wife closer to their dream.

Steve, a trainer of 23 years and his wife Bonnie are known in their small town as "the fit couple." Tasha, wife and mother of three hasn't been in shape in years.

When Adonis found himself overwhelmed with depression as a young man, the solution he found to overcome it was fitness.

With a degree in dietetics and 17 years of experience as a trainer, Alex has fitness down to a science. Geoff is a foodie and young professional who wants to lose weight for his upcoming wedding.

Corey is a young and ambitious personal trainer who loves to push his clients to their limits. Raela is a preacher's daughter and a homebody who is trying to love herself enough to get fit.

Since becoming a trainer three years ago, Katie's obsession with health and fitness fuels her passion for experiencing life. Alternatively, Chef Mateo's love for food has completely consumed every aspect of his life.

27-year-old outdoor enthusiast and gym owner Carrie loves inspiring women to lead healthy lives. When not at her gym, she's playing in the mountains with her fiance. Kenlee is a wife and mother whose busy schedule prevents her from making time to exercise and eat right. Carrie will throw away the lifestyle she loves and try to gain as much weight as she can in order to lose it alongside Kenlee and empower her to put herself first.

Fallon, an energetic personal trainer and celebrity fitness correspondent has no idea what it's like to be overweight. JD, a red carpet videographer, dreams of having a family but has been finding it difficult.

Seth, a yoga instructor and gym owner in South Florida, is destroying his body in order to get his client Dave to change his unhealthy ways.

Tramell, a young bodybuilder and business owner has one of the best bodies in the country. Jason and Johnny, nicknamed "salty and sweet" enable each other.