The Finale of NBC's 'The Biggest Loser' was truly a night to remember as Rachel Frederickson was crowned the "The Biggest Loser" Winner with a $250,000 grand prize, but it also sparked a lot of criticism from viewers saying that Rachel Frederickson was "two skinny" and went too far on the weight loss.

Rachel Frederickson, a 24-year-old former swimmer in Los Angeles, who started out at 260 lbs and ended the show at a shocking 105 lbs. She lost 155 lbs which is 60 percent of her body weight.

Many viewers are worried, prompting the question of her safety. Frederickson told the 'Today' Show,

"I'm at the maintenance point now so I need to find some balance and make sure I work out and I eat healthy and make good choices 90 percent of the time," she said. "I'm not sure [I'll maintain this weight], but I plan to try new exercises and just continue on this path and see where that takes me."

Celebrity trainers Jillian Michaels and Bob Harper wouldn't comment on her appearance directly and instead took to social media. Harper posted to Facebook and expressed his views:

"Jillian and I want to take a moment to congratulate all of the BL contestants on their hard work. We're not comfortable commenting on Rachel's journey because we weren't her trainers and weren't given an opportunity to work with her at any point. Any questions about the contestants on 'The Biggest Loser' should be directed to the show's producers."

Michaels' rep had a similar message and told People Magazine,

"Jillian Michaels will not comment on Rachel's journey as she was not her trainer. She is celebrating the at-home win of her contestant, Tumi. Any questions about any of the other contestants on the 'Biggest Loser' should be directed to the show's producers."

On Twitter, Michaels expressed to fans she "wasn't comfortable" answering question about Frederickson's weight loss and like Harper, directed fans to the show's producers.