The teams head to a football field in this scene from The Biggest Loser. It's from the eighth week of the competition.

Alison Sweeney surveys the group in this shot from The Biggest Loser. The red team looks ready to go!

This is a scene from the sixth week of The Biggest Loser. Shave those pounds, people!

Push, push, push! Jillian Michaels gets up in the grill of a contestant in this shot from the 2/1/11 episode of The Biggest Loser.

Rulon Gradner is in training here. The former wrestler is trying to lose a massive amount of weight.