Alongside Harper was fellow straight-talking coach Jillian Michaels, and despite the pair competing as team leaders, each hoping their contestants would be the ones to lose the most weight at the weekly weighing in ceremony, they seemed to share a close and loving friendship.

Michaels was a trainer on “The Biggest Loser” for seasons 1, 2, 4-11, 14, and 15. She often motivated contestants by yelling at them or insulting them. In one clip from “Fit for TV: The Reality of the Biggest Loser,” Michaels pushes a woman to keep exercising even after she vomits on a treadmill.

Between 2004 and 2013, Jillian Michaels and Bob Harper worked together on 12 seasons of The Biggest Loser. However, they drifted apart after their time on the show ended, and Harper revealed in a new interview with The Guardian that his former costar didn’t even reach out to him when he had a heart attack that nearly killed him in 2017.