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Kourtney Kardashian reveals the one situation in which she’ll break all of her dieting rules

Any good, healthy dieter or nutritionist will tell you that to lose weight - and keep it off - you need to exercize regularly and eat mostly whole and unprocessed foods. Simple in theory, incredibly difficult to pull off. Especially when the McDonald's Dollar Menu is so cheap and tempting.

The goal when you embark on a health or weight loss plan is usually to have a lithe, killer body and probably look like your favorite celeb. Say, a Kardashian for example. As healthy lifestyles go, not many do it better than them, and today we're going to look at Kourtney in detail.

Kourtney Kardashian may be known for being a health guru, but the reality star says she also knows when to "break the rules." The 38-year-old recently shared her daily diet on her website, noting there are a few food groups she avoids entirely, while other days she isn't too hard on herself.

“A few years ago, the kids and I did muscle testing and found out we have sensitivities to both gluten and dairy,” she says. “After speaking with my doctor and doing some research, I decided to try a gluten- and dairy-free diet.” Kourtney says although it was hard to break routines in the beginning, she found ways to create and stick with new habits.

She talks about the little things making a big difference mostly. “Once I found good ingredient swaps and started stocking my pantry and fridge with the best alternatives—like almond milk, tortillas made from sweet potatoes, gluten-free waffle ingredients for the kids, dairy-free shredded cheese, etc.—eating this way became easier and a lifestyle choice that works for me and my family,” she says.

As any mom of three knows, sticking to an almost perfect diet and exercise plan is not always easy. When the Kardashian is travelling with her sons Mason, eight,  and Reign, who's three, and five-year-old daughter Penelope, she eases up on what they eat—but really relies on being prepared.

“For the kids, of course, there are moments when we break rules, like when we’re on vacation or at Disneyland,” she says. “I try to plan in advance to have what we need so we can stay on track, since I’ve heard cheating when you have gluten sensitivities can set your system back […] When we travel, we’ll pack a suitcase full of our pantry staples and also bring healthy snacks on the airplane.”

Kourtney continues (or should that be kontinues?): “I also try to avoid processed foods in general. I really try to focus on fresh and organic fruits and vegetables, and healthy proteins like salmon, chicken and eggs. When I’m traveling (and sometimes on the weekend), I’ll cheat—I’m a little more lenient now than I was when I first started this whole thing. But when I’m home and in my day-to-day routine, I try to exercise 5-6 times a week and eat healthy every day.”

Words we can all live by, I think. Being busy doesn't mean you can't seek out healthy food and exercize, even if you do have a social media empire and three kids.