Jillian Michaels and Bob Harper – longtime trainers on “The Biggest Loser" – appeared inseparable on screen, but behind the scenes their friendship fell apart.

Since the documentary aired, cracks have also begun to show between the show's familiar faces, including Jillian Michaels, and fellow trainer, Bob Harper. During The Biggest Loser's hay day, while ...

Michael also accused Huizenga and fellow The Biggest Loser trainer Bob Harper of lying about not approving the use of caffeine supplements. She then shared screenshots of emails dated back in 2009 ...