India, Aug. 19 -- Jillian Michaels has fired back at the new Netflix documentary on The Biggest Loser, calling it a "giant lie." She told TMZ that she is preparing to take legal action against Netflix, producer Bob Harper, and doctor Robert Huizenga for false claims made in the film.

Michaels disclosed that she is scheduling a meeting with well-known lawyer Bryan Freedman to discuss her next course of action. According to the trainer, the documentary unjustly implies that she gave contestants caffeine pills in secret while they were competing, she shared on an Instagram post.

She wrote, "Here is an email chain with @bobharper - the Biggest Loser's producers - @drhuizenga's guy, Sandy Krum, who stayed on set with us and distributed the f...