Anna Kournikova

Tennis superstar Anna Kournikova gives all the players tennis lessons for a total body workout before a tennis ball pop challenge. Then the players are surprised by another early weigh-in. Also available on Netflix, Amazon Instant Video and iTunes

After weeks of intensive competition and hard work, one contestant earns the title of 'The Biggest Loser.'

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

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

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.

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.

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.

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.

NBC's reality series examines America's fight against obesity by focusing on a group of men and women who are grappling with their weight. Participants in this debut season follow an intense diet and fitness plan while living together under one roof. Each week, the cast members are weighed and vote one person off the show. Competition is fierce as contestants vie for a cash prize and the title of "The Biggest Loser."

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.