The Biggest Loser' aired from 2004 to 2020. Here's everything to know about where the reality TV show's trainers — including Bob Harper and Jillian Michaels — are today.

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,

The Biggest Loser trainer Bob Harper came perilously close to death when he suffered a heart attack in February 2017. The shocking health scare was seemingly unimaginable for Harper, who spent 18 seasons training contestants on The Biggest Loser to make their physical and emotional health a priority.