The Reality of The Biggest Loser' reveals that Jillian Michaels never reached out to Bob Harper after his heart attack.

Netflix’s new documentary, “Fit for TV: The Reality of the Biggest Loser” just landed on the streamer and it pulls back the curtain on allegations made against producers and former cast members of NBC’s former series “The Biggest Loser.”

Mockery, dangerous weight loss practices and long-term health impacts — “The Biggest Loser” was a TV phenomenon that shaped how Americans view weight.

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.

"The temptation challenges were the hardest part of the show for me," Sweeney says in Netflix's docuseries, 'Fit for TV: The Reality of The Biggest Loser'

Back in 2009, Danny Cahill won $250,000 after being crowned the winner of The Biggest Loser Season 8. He lost nearly 240 pounds on the show. Cahill started the show at 430 pounds and was down to 191 pounds by the end of his journey.

However, a detail briefly touched upon in the new Netflix documentary is that a year after The Biggest Loser's initial run ended, Bob suffered a near fatal heart attack at the age of 52 while exercising.