"The Biggest Loser" returns to NBC on Sunday, Jan. 6, 2013 with a special two-hour premiere that features a mix of old and new.
Trainer Jillian Michaels returns to the "Biggest Loser" ranch.
The hard-nosed trainer took a break from the show to become a parent.
That's given her an even greater appreciation for this season's twist: Incorporating three overweight teens.
'Biggest Loser' season 14 photos
The teens won't be traditional competitors.
There will be no weigh-ins for them and no eliminations.
The emphasis is on educating the kids and those around them.
"The Biggest Loser" has its season premiere Sunday night at 9, before moving into its new home Mondays at 8 the next night.