It's no wonder then, that Netflix decided to take a deep-dive into The Biggest Loser, interviewing former contestants, coaches, and health experts to expose what it was really like to appear on the hit show. With that being said, here's 12 of the most shocking revelations that Fit for TV uncovers...

David Broome, a co-creator of The Biggest Loser, says in the docuseries that he got the idea for the show after seeing a desperate “help wanted” ad for a personal trainer to “save my life” on a bulletin board outside of a gym. Once the show was underway, producers searched for similarly desperate contestants.

The Reality of ‘The Biggest Loser’ premiered on August 15, 2025, on Netflix. The three-part docuseries examines NBC’s The Biggest Loser, with all episodes released simultaneously.