She says she's following the "calorie budget" the show gave her.
Rachel Frederickson worked hard to lose 60% of her body weight to win The Biggest Loser Season 15 crown and $250,000 prize. It was the highest margin of loss in the history of the show.
Frederickson, 24, went from 260 to 105 pounds. She's 5-feet-4.
But since she won on Tuesday, the Los Angeles voice-over artist has faced a backlash of remarks about being too thin and is now defending herself (with well-coached answers, it appears) and her new routines.
"I followed The Biggest Loser exercise and healthy eating routine, so I actually eat five times a day because it's better for your metabolism," she told reporters in a press call Wednesday, reports Reality TV World.
"I eat a protein in every meal, and then when I had down time, my butt was in the gym! I was on the spin bike, I was at the exercise classes, I was swimming in the pool, and just connecting, too, with all the people in the classes -- which was my favorite part. I hid myself so much, so to be able to go to these classes and make connections with the motivation in the room, that was the best part about all of it."
When asked about fans saying she's lost too much weight, she said, "I think that with my journey, I truly found the person I want to be, so it's about the lifestyle for me."
She added, "Like I said, I never felt this great and I know I'm going to feel ever better, because this life is just so open to me and I can't wait to take charge, because that's what I gained back. It's confidence, it's assuredness of myself to just take charge and conquer this life."
When pressed for exactly what she was eating, she said, "Yeah, you know, I ate 1,600 calories. That's what my budget was from the support system that I had at The Biggest Loser. So they give us our calorie budget."
Biggest Loser trainers Jillian Michaels and Bob Harper opted not to comment on Frederickson, saying in a tweet they hadn't worked with her.