Career
He appears on the American television series The Biggest Loser. On September 8, 2015, Harper was announced as new host of The Biggest Loser, succeeding Alison Sweeney. Harper has worked as a personal trainer for celebrity clients, including Jennifer Jason Leigh.
In 1999, he was cast as an extra in Melissa Etheridge"s hit video for the song "Angels Would Fall" from her album Breakdown.
He is featured as a trainer on the United States version of The Biggest Loser reality television series. He has been a trainer on the National Broadcasting Company show since 2004.
In addition to working on the show, Harper has appeared in several Biggest Loser Digital Video Disc workouts. Harper also appeared on the first three seasons of the Australian version of the show.
In early 2010, Harper launched mytrainerbob.com, a website where subscribers can discuss weight loss and receive coaching.
The success of his site led to the release of his first workout Digital Video Disc series in May, titled "Bob Harper: Inside Out Method." Harper also contributes workouts to websites such as Shape magazine. Harper is also an avid CrossFit athlete.