Jillian Michaels, who served as a fitness trainer on the NBC reality series The Biggest Loser from 2004 to 2011, has ...

Frederickson did end up gaining back 20 pounds within a couple months of the finale. She told Us Weekly in April 2014 that ...

Jillian Michaels didn't get along with every contestant on "The Biggest Loser" ... but, that doesn't mean she was handing out ...

Rosie O'Donnell criticized Jay Leno after Netflix's 'Biggest Loser' doc aired a 'Tonight Show' clip of Tracey Yukich ...