Chrissy Teigen

One thing we all want to know: How does Chrissy Teigen balance eating Bloomin’ Onions with having a body that graces the cover of Sports Illustrated?

“I think people don’t know because I’m not that type of person, I just don’t Instagram myself at the gym or making green juice,” the swimsuit model and food blogger tells PEOPLE at Shutterfly’s Wine, Dine & D.I.Y. Design holiday event in N.Y.C. on Tuesday. “So I think people think that I don’t do that. But if I post me eating Taco Bell, I probably had a fantastic breakfast and lunch, or I’ve been good that entire week!”

RELATED: Chrissy Teigen Says She’s the ‘World’s Worst Baker’ — and Makes a Crazy Cake to Prove It

In terms of working out, Teigen says she keeps up her fitness regimen by taking breaks between tough training periods.

“Sometimes I’ll go two months without working out and them my trainer will be like, ‘What the hell, get your ass back here!’ And then I go really hard.”

The supermodel admits that, just like anyone else, she can slip up – and that’s okay with her, as long as it doesn’t happen all the time.

“It’s all about balance,” says Teigen. “And yes, I definitely stray, I go crazy, but if I did that all the time I would be very unhappy, like physically sad and just feeling lazy and horrible.”

“Sometimes all it takes is a bad photo or someone thinking you’re pregnant to hit the gym again!” she says.

RELATED: Chrissy Teigen on Her Tom Yom Soup: ‘Thank God You Can’t Taste Instagram’

Teigen will reunite with her husband, singer John Legend — who’s currently on tour — to celebrate Thanksgiving and her 29th birthday on Nov. 30.

“Thanksgiving is my personal favorite holiday, it trumps Christmas!” says Teigen, who just landed her first cookbook deal with Clarkson Potter. “We’re getting a big old house and having his family come down and it has a game room and a lot of fun elements, a lot of kids running around in the family, and I’ll be able to cook. For me, Thanksgiving is about trying new recipes. It’s nice to have tradition and the staples, but I love seeing new things and getting excited.”

And what will the supermodel chef be cooking up this year? In addition to “about 20 dishes or so,” Teigen is most excited to try a “baked mashed potato dish that has chunks and pockets of cheese in it. So you make your mashed potatoes and then you bake it afterwords and everything inside it melts and it just becomes this gooey, delicious cheese.”

RELATED: PHOTOS: What Chrissy Teigen, Drew Barrymore & Other Stars Are Eating Right Now

And while a full Thanksgiving meal might be enough cooking for most in one weekend, Teigen also has some grand plans for her birthday and football Sunday.

“Someone Tweeted me this wonderful recipe for Doritos and Oreos popcorn,” she says. “It’s like junk food mixed with popcorn and candy. I’m so excited. And I’m excited for football Sunday. I love football food, like just ridiculous food. You can dream up anything! You can coat chicken tenders in Cheez Its and fry it, and ‘oh, it’s just football Sunday, whatever!'”

Our only question is, can she make us some?

—Aurelie Corinthios

This embed is invalid