This week brings a pop challenge that will add an interesting twist to the weigh-in, and later, the contestants head to 24 Hour Fitness for a relay race competition. The winning team gets 24 hours of luxury, including spa treatments, but some contestants have trouble resisting temptation during their 24-hour getaway. Also, one contestant has a big blow up with their trainer, and all of the contestants get some welcome and surprising news from host Alison Sweeney after elimination.

All of the contestants head home for a week, where they are faced with the challenge of continuing to make healthy food choices and getting their workouts done in their home environments. After they arrive home, each player gets a DVD with host Allison Sweeney revealing their "at home challenge" - to run a half marathon - 13.1 miles! A cookie temptation adds an interesting twist to the competition, and the players find out the results of their hard work once they return to the ranch. Later, another contestant is sent packing.

The teams split up and the competition goes to playing as singles, and the weigh-in finds one player breaking a Biggest Loser record. (TV-PG)