NBC is kicking off the latest season of The Biggest Loser with a familiar face. After two years away, Jillian Michaels is back to play. The trainer, who's famous for her no-nonsense methods, will rejoin the reality show for its January premiere.

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According to EW, NBC confirmed Michaels' return as well as a few twists to this season's competition. The age range for contestants has been lowered to include 13 -17-year-olds, which could only mean one thing: they're going after childhood obesity.

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The kids will get all the weight loss benefits of the program, but won't be competing for the title prize. They'll also be spared from eliminations and TV weigh-ins.

The contestants will be broken up into three teams, which consist of one teen each. They're training will be supervised by Michaels, Bob Harper and Dolvett Quince.

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After recently becoming a mother, Michaels sees this season's The Biggest Loser as a personal challenge.

“As a former overweight teen, I know firsthand how dramatically weight issues can affect every aspect of a child’s life,” Michaels said in a statement. “Having recently become a mother of two, I am more passionate than ever about helping empower children and families with the information and resources they need to live a healthier life.”

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Michaels previously left the show in 2011 to focus on starting a family. During the break, she welcomed two daughters with partner Heidi Rhoades.

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