Bob Harper, Biggest Loser Trainer: Net Worth, Twitter, Age, Bio, Photos

Bob Harper, trainer on "The Biggest Loser," poses with fan Alyssa Whetstone at SELF magazine's 21st annual Workout in the Park, Saturday, May 17, 2014, in Chicago’s Grant Park. Photo by Peter Barreras/Invision for SELF/AP Images

Bob Harper returns as one of the trainers on NBC’s The Biggest Loser, which is premiering on Thursday night.

Harper has been with the show for all 16 seasons.

He’s joined by new trainers Jessie Pavelka and Jennifer Widerstrom, who are replacing departed Jillian Michaels, as well as Dolvett Quince.

Harper, 59, is a personal trainer who has worked for a number of celebrity clients. He teaches classes in Los Angeles and also works sometimes as a yoga teacher.

Harper describes himself as a fitness expert, television star, and author on his website.

(NBC)

Bob Harper speaks onstage during the NBCUniversal portion of the 2013 Winter TCA Tour- Day 3 at the Langham Hotel on January 6, 2013 in Pasadena, California. Getty Images