The Biggest Loser: Episode 501

For the first time ever, teams of two will compete against each other rather than individuals. Ten teams - including a mother and son, husband-and-wife, best friends, brothers and a divorced couple - have to pick their trainer, weigh in and compete in challenges together. The teams will have to pull a giant hot air balloon across a field, with the winner getting a coveted 2 lb. advantage at the first weigh in.