Kourtney Kardashian Did Cardio During EVERY Workout To Get Her Current Bod

More than you think. In fact, to get to her current level of cardio fitness, Kourtney worked out five to six days a week with trainer Don Brooks , a.k.a. Don-A-Matrix . "Now that she's where she wants to be, Im more project based with her," Brooks tells Women's Health. "Say, she's going to the Met Gala, she'll call me up."

Brooks, former NFL trainer and ambassador for BODYARMOR , splits his workouts up into four quarters (similar to a football game), and they typically last for 45 minutes. And yes, every single one involves cardio, and lots of it.

But that's not all! Brooks is a big fan of combining cardio and strength training in all of his workouts, so not only does he get Kourtney's heart revving, but also helps sculpt her body simultaneously. " Most people go to the gym and do cardio first and then their resistance training," says Brooks. "What I do is choose a lot of multi-functional movements that are cardio based, but add resistance bands for tightening and toning." He'll also swap in certain resistance moves based on his clients' fitness goals.

For Kourtney (plus Khloe and Kim, when he works with them), Brooks says the fave move is, unsurprisingly, the squat. "They LOVE working the glutes and their lower body, to tone their butts," he says.

Here's a couple of squat variations Brooks includes in the Kardashians' routines.

Squat Jump With Resistance Band: Wrap a resistance band around your thighs. Sit your hips back and lower down until your thighs are parallel to the floor. As you rise up, instead of just standing, jump up as high as you can. Return to start. That's one rep.
Squat With Side Kick: Wrap a resistance band around your thighs. Sit your hips back and lower down until your thighs are parallel to the floor. Return to start, then kick your left leg to the side. Return to start. Squat, then kick your right leg to the side. That's one rep.
Squat With Biceps Curl: Grab a resistance band with two hands. Place the band under your feet, and hold a handle in each hand. Sit your hips down and lower into a squat. As you rise up, simultaneously complete a biceps curl with the resistance band. That's one rep.

Now, is Kourtney obsessed with all this cardio? Not particularly. But, like all her sisters, "they pep talk themselves" says Brooks. " These moves expend so much energy from their body, but ultimately, it really helps them reach the results they want."