Celebrity trainer and fitness expert Jillian Michaels is walking away from "The Biggest Loser" after the upcoming season -- and she's talking to "Extra" about what viewers can expect on the hit NBC show.

"This season is really about the show transitioning," Michaels said of two new trainers the show has added. "Kinda passing the torch."

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Catch "The Biggest Loser" premiere, Tuesday on NBC at 8:00 PM PST.

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