Melissa Morgan

Find out who will be named this season's Biggest Loser!

Following a special two-part format, this competition between weight-loss teams goes down at both the Biggest Loser ranch and in the real world. In each episode, hosted by Caroline Rhea, contestants focus on personal as well as team goals.

"The Biggest Loser" is revealed in the season finale.

Fourteen overweight contestants arrive at the Biggest Loser Ranch and are surprised to be immediately divided into two teams: men against women. Challenges include competing in zero gravity, a steep uphill climb and resisting temptation in Las Vegas.

The acclaimed weight-loss reality series continues to help overweight people work away their excess pounds with the help of expert fitness trainers. In the show's third season, contestants join from all 50 states for a truly national competition.

One team of two strangers competes against nine other teams who have the advantage of being with a loved one or friend as they work to lose weight. Jillian Michaels's mom, a psychotherapist, offers insight about the emotional reasons for overeating.

In the finale, all of "The Biggest Loser" contestants from the season return for a special reunion and a chance to weigh in one last time.

In Alison Sweeney's first season as host, the show features three teams instead of two, with Jillian leading a band of six rejected contestants. The competition intensifies as the players are sent on an exotic getaway, complete with food temptations.

Family rules in this season of the reality weight-loss show, with four teams of married couples and four parent-and-child teams competing. After learning about physical age versus biological age, the players get serious about getting healthy.

Two new trainers and a twist on immunity are added to the new season, which features former Olympian Rulon Gardner as a contestant. During an exciting trip to New Zealand, the players learn how to eat healthy, count calories and exercise on vacation.

The current crop of contestants realizes that more is at stake than just vanity when Dr. H. declares that they are the sickest group of any players ever to hit the Biggest Loser Ranch. They tackle a variety of challenges, including food temptations.

A fan favorite returns to carry on the weight-loss journey and inspire Shay, a social worker who earns the unenviable title of heaviest player ever. Other contestants striving to improve their health include a firefighter, a coach and a young widow.