In an interview with PEOPLE, her nutritionist Dr Charles Passler (who also looks after the likes of A-listers Adriana Lima and Naomi Watts) revealed exactly how he helps his clients stay runway-ready all year round.
“I help them to understand that they are where they are today in relation to their overall health because of the lifestyle they are engaging in,” he explained.
“I’ll put some individuals on a strict type of a, if you want to say, diet, to get faster results initially, but what it’s really about is teaching them how to change their lifestyle into a lifestyle that allows them to maintain the goals that they’re trying to achieve, whether it’s sleeping better, or weight, exercising and hydrating.”
For Bella, this means adopting a high-protein, low carb eating regime to help her stay lean and full of energy.
“It’s adequate protein, adequate fat and lots and lots and lots of non-starchy vegetables. That is typically the most bulletproof, easiest, soundproof way to make sure that somebody stays on track.”
Sure, chowing down on broccoli and kale all day sounds super boring. But there’s a method behind all this madness.
“If you eat a lot of carbohydrates, with your protein and your fat, the body’s going to use the carbohydrates for fuel first,” Passler said.
“The body loves using carbs for fuel. So, the body’s going to soak up all of those carbs and if then you don’t need any more fuel, the body’s going to just turn the extra calories from the fat and the protein into fat. So, by eliminating the carbohydrates, and consuming the protein and the fat, it not only keeps your calories down, but it keeps your energy stable.”
And contrary to what the countless pics of pizza on her Insta account would have you believe, Bella isn’t one for indulging – like, ever.
“You’re just a person that does not drink soda – I don’t care if you’re at a birthday party, and that’s all they have, then don’t drink anything. I don’t care if you’re the person that loves pizza, well, just minimise the pizza intake or minimise the refined sugar intake,” Passler continued. “In order for somebody to be consistently healthy, the biggest key is to engage in a lifestyle that allows you to own that permanently.”
There’s no denying the girl looks good, but clearly, it comes at a price.
This article originally appeared on Women's Health.