Contestants must choose between two foods to have as their diet for the entire week. Except for the first week, the biggest loser from the previous weigh-in is the only person to choose on behalf of their team, the other team must take the remaining item(s).

• Week 1 - Seafood vs Red Meat: Contestants were required to choose between seafood and red meat, which would form the basis of their diet for the next week. Initially, 12 contestants were in favour of the seafood, whereas 3 contestants made it clear that they would prefer the red meat. The discussion quickly degenerated into an argument, caused by a strong personality clash between JJ and Sheridan. The contestants were eventually unanimous in their decision to choose seafood.

• Week 2 - Cabbage vs Can Food: Contestants were required to choose between cabbage and can food (without any labels on) for the next week. However, since the contestants were in teams, one team would have cabbage and the other team would have can food. The food cannot be shared between the two teams, from this choice onwards. For being the Biggest Loser at the first weigh-in, Sean had the power to decide what the red and blue teams would have. He decided to pick cabbage before discussing it with his teammates, causing some friction between some members of the blue team. This meant that the red team was forced to take the can food where some of them consist of carrots, peas, potatoes, luncheon meat and condensed milk.