May 21, 2014 10:49 AM

Courtesy Jay Cardiello

Real Housewives of New York fans have probably spent some time admiring Kristen Taekman’s pretty face (especially during #lipgate) and her supermodel figure.

How does she stay in such great shape? Surprisingly, her daily workout is only 20 minutes — and now you can try it, too.

The reality star has teamed up with celebrity trainer and JCORE founder Jay Cardiello on new fitness DVD Body Back, a realistic cardio and strength-training program for any type of exerciser. No equipment or weights are needed, and it can be done in as small as a 4’x4′ space (ideal for Taekman’s fellow New Yorkers!).

“I said in the beginning I’m not a gym person. I walk into the gym and don’t know what to do with myself and I’m too embarrassed to ask,” Taekman tells PEOPLE. “Like I literally walk around and pretend I know what I’m doing when I really don’t. So it’s awesome that I can just watch this video, and I have everything I need right there.”

The fact that it only takes 20 minutes “is huge,” she continues. “I will tell my friends about JCORE Body Back and they say they don’t have time for that, and I’m like, ‘No you don’t understand. You start at 7:10 and you’re done at 7:30.’ Everyone has 20 minutes.”

But just because the workout’s short, don’t think you’re not going to sweat. Rapid 30-second strengthening and stabilizing movements, like the “Rockin Kicks,” in the video below, have you working hard. Our core was burning after the first few kicks!

“When we first started this whole process I was so winded — 7 minutes in and I felt like I couldn’t get through it,” Taekman shares. “I kept saying to Jay, ‘I feel like I’m fit, but you obviously know how to help me tighten and strengthen.’ My goal was to not feel winded and I’m finally there, which is great.”

—Brittany Talarico

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