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02:48 — Jillian Michaels returns, along with Bob and Dolvett, to challenge and inspire America. The Biggest Loser returns January 6th!
01:25 — Ali fills you in on her busy routine.
01:59 — Take a closer look at this season's teams on "The Biggest Loser: Couples." Season Premiere, Jan. 5, 8/7c
03:17 — Check in with Sam by watching their weekly personal video blog.
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"We want it to be even better than Season 1," says Chief Jim Hopper