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.

Although Michaels was not featured in the docuseries, she has spoken openly about her time on The Biggest Loser and her life since leaving the hit show. Michaels has continued working in the health and fitness world while getting involved in podcasting and politics, including meeting with the Trump administration.

For those less familiar, let's take a look at who Jillian Michaels is and what she's been up to since the Biggest Loser wrapped – and what we know so far about her decision not to appear in the Netflix docuseries,