Michaels, 51, alongside Bob Harper, 60, was one of the personal trainers on the NBC reality show, which aired from 2004 to 2016, following obese people as they attempted to lose weight as quickly as possible using only diet and exercise for a $250,000 cash prize.

Witness the explosive confrontation as a Black ‘Biggest Loser’ contestant takes on celebrity coach in a profanity-laced showdown. 💥

Former host of The Biggest Loser, Alison Sweeney, and trainer Bob Harper opened up about how much they disliked the reality series' controversial temptation challenges "The tempta