The Biggest Loser: Season 12, Episode 1

12 - 1:

This is the season 12 premiere of The Biggest Loser. New sets of overweight competitors will be introduced on this premiere. This season the series will be dubbed as "The Biggest Loser: Battle of the Ages" which is first time for the reality series to group the contestants by age. The under thirty group will be trained by Dolvett Quince, team thirty to forty-nine by Bob Harper and fifty and over by trained by Anna Kournikova.