The contestants hang out in the kitchen, where Vinnie serenades them with a funny original song about their experience on "The Biggest Loser." Alison interrupts to introduce the latest challenge, reminding everyone that there are a lot of stereotypes associated with age. For instance, many people think young people like to sleep late, and old people have trouble staying up late. This week, the contestants will be put to the test. When Alison asks for volunteers from each team, Vinnie, Mike and Antone stand up. Before the guys join Alison in another room, they can smell what's right around the corner... a whole lotta donuts! Vinnie immediately knows it's time for the first Temptation Challenge Alison explains that the contestants have an enormous privilege on the ranch. They can work out any time of day with world-class trainers. But not this week...