Jillian Michaels is punching back at “The Biggest Loser” alumni who made claims against her in the Netflix documentary “Fit for TV,” which explores the “dark side of the NBC reality series.” Michaels was a fitness trainer on the weight-loss competition series from 2004 to 2011,

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.