Get To Know The New 'Biggest Loser' Trainers: Jessie Pavelka & Jennifer Widerstrom

Season 16 of The Biggest Loser comes with fresh motivation and new rock-hard abs. Long-time trainer, Jillian Michaels, will be replaced by Jennifer Widerstrom and Jessie Pavelka.

The show premieres Thursday and fans are eager to see what the new trainers will offer the 20 former athletes that will be the contestants on the show.

The new trainers will work alongside veteran trainers Dolvett Quince and Bob Harper in this year's The Biggset Loser: Glory Days.

Widerstrom is no stranger to NBC as she was a former star on the show American Gladiators. With a long list of media credentials such as MSN.com Wellness Coach and an expert for Women's Health, she's certified in many ways. The new trainer is certified by the National Academy of Sports Medicine with an emphasis in balance training, cardio performance, reactive and resistance training as well as in neuromuscular stretching.

Pavelka is a fitness expert and TV host in the UK where he hosted, Obese: A Year to Save My Life and Fat: The Fight of My Life for Sky TV.  The new trainer states that he got his first break when Ed Connors told him to enter a bodybuilding competition where he came in fourth. He was born in Corpus Christ, Texas.

Season 16 is different from the rest, as they will focus on 20 former athletes who need the help of the trainers. The contestants consists of Olympic gold medalists and NFL players.

Fans of the series will get a new turn in the show, "Comeback Canyon." Every contestant that is eliminated will be sent to a secret location where Harper will train him or her for a chance to come back to the game and win $250,000.

It is rumored that Jillian Michaels exited the show after Season 15 shocked viewers when contestant Rachel Fredrickson revealed a drastic weight loss that made headlines. "She wasn't happy with how last season went. The shocking weight loss of Rachel doesn't do the brand any favors and she wants to distance her name from it," a source told E! News.

The Biggest Loser: Glory Days premieres Sept. 11 at 8 pm on NBC.