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.

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