Watch The Biggest Loser Season 5 Online

For the first time ever, ten teams of two will compete against each other. The ten teams, including a mother and son, husband and wife, best friends, brothers, and a divorced couple, will have to pick their trainer, compete in challenges and weigh-in together. In their first week, the teams will have to pull a giant hot air balloon across a field, and the winner will receive a two-pound advantage at the weigh-in.