"Biggest Loser" trainer Bob Harper opened up about his 2017 heart attack, including the reaction of his costar Jillian Michaels.

Bob Harper, who cohosted 12 seasons of The Biggest Loser with Michaels, said in a recent interview with The Guardian that she was not among the alums of the controversial reality competition series who reached out to him after he suffered a heart attack.

Bob Harper, a former trainer and then host of The Biggest Loser, is remembering one of his most terrifying experiences and the notable lack of support he claims came from one of his most well-known co