No, 90 Day Fiancé's Anfisa Nava is not messing around with her fitness: The participant from Season 4 is in bodybuilding mode — and she's also made changes to her diet that have contributed overall to a major 26-pound weight loss.

She told E! News that she first lost about 15 pounds in a six-month timeframe, and that's when she started thinking about competing as a bodybuilding. "So then I actually gained a little weight to increase my muscle. But then I lost more. It took about a year and a half. I wasn't in a rush," she told E! News. "In the beginning, I was 146 pounds and now I'm about 120."

Interestingly, it was her move to the United States that changed her body, Nava said. "I've actually been skinny my whole life, but when I moved to the United States I gained about 15 to 20 pounds. The food here is different from the way I used to eat in Russia," she said.

"In Russia, I would eat home-cooked meals but here I would go out to eat a lot," she added. "And I wasn't really controlling it, I was eating everything. There was also more stress."

(It's a sentiment fellow naturally thin person Giada de Laurentiis also echoed about the American way.)

"I just reduced my portion size and started doing cardio too," Nava said.

Over on her Instagram, she's shared some snaps showing her nutritious food. Think: "oatmeal pancake w/ turkey slices, egg whites, cashew queso, guacamole & pico de gallo. Doesn't looks very exciting on this picture but oatmeal pancakes have been my favorite breakfast lately! Only 2 ingredients are required: oats and egg whites. You can make it with savory or sweet filling." 

She also whips up: "Chicken thighs w/ brown rice and veggies. Switching from eating chicken breast to chicken thighs has been literally life changing for me. I like simple quick meals and I found that chicken breast often comes out somewhat dry and tasteless. So I decided to try chicken thighs and OMG what a difference. This time I made them on the grill but usually I just cut the thighs into small pieces, throw on the pan, season, and cook for 5-6 minutes. Comes out amazing every time. It does have more fat than breast but that's alright.

Another go-to meal for Nava is "ground beef w/ jasmine rice, beans, veggies. YES, I eat white rice!"