Kim Lyons

A trip to the island paradise of Hawaii includes a lesson with soul surfer Bethany Hamilton!

A wild dunk tank challenge leaves one team without a trainer for an entire week!

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

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.

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.

Twin brothers weighing in together at almost 1,000 pounds join 10 other teams of couples, and they are all given "medical tasks" by Dr. H. The players get to work out with Olympians in Colorado and are treated to some food tips by chef Curtis Stone.

The series that's helped hundreds regain control of their weight invites contestants from seven cities to the Biggest Loser Campus, where they learn how to shed pounds safely. This season also covers a decade of the show's success stories.

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 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.

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 Biggest Loser" is revealed in the season finale.