Season 1 Episodes12
Cast3

Bob Harper
Self

Caroline Rhea
Host

Jillian Michaels
Self
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""Biking Challenge"" Contestants race to log the most miles on a stationary bike before midnight, with a prize of better-fitting clothes as an incentive; participants learn of a new twist in the game.

Bob Harper
Self

Caroline Rhea
Host

Jillian Michaels
Self
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"Episode 7: Biking Challenge" is episode 7 of The Biggest Loser season 1. It aired on December 7, 2004.