United Kingdom, Aug. 21 -- Jillian Michaels has rubbished allegations made against her on Fit for TV: The Reality of the Biggest Loser.

The 51-year-old fitness trainer previously starred on The Biggest Loser, the NBC reality series that featured overweight contestants striving to lose weight in order to win a cash prize, and Jillian has now rubbished a series of claims made about her on Netflix's Fit for TV, which tells the behind-the-scenes story of the show's success.

Alongside an old email chain from her time on the show, Jillian wrote on Instagram: "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 fat burners about which "fat burners...