For years, Bob Harper and Jillian Michaels appeared to have great chemistry onscreen while filming "The Biggest Loser" together. But a new docuseries about the NBC weight-loss competition has fans wondering if the dynamic duo actually got along in real life.

Joelle is still holding onto every word Bob said to her, as she relives her traumatic altercation with the trainer in Fit for TV: The Reality of the Biggest Loser

Rachel Frederickson became famous after winning Season 15 of The Biggest Loser in 2014. Her dramatic weight loss, from 260 lbs to 105 lbs, gained both admiration and backlash. Now that Netflix’s new documentary Fit for TV: The Reality of The Biggest Loser is streaming,

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

Tracey Yukich tells Fox News Digital that she learned a lot about herself on the show. Yukich appears in the new Netflix documentary "Fit for TV: The Reality of the Biggest Loser."

The Biggest Loser' is the subject of the 2025 Netflix docuseries 'Fit for TV: The Reality of the Biggest Loser'