Toned Butt and Abs: How to achieve a workout Body Type like Shakira: When training for the Super Bowl earlier this year, Shakira sculpted her impressive core using trainer Anna Kaiser’s comprehensive ab workouts. (Kaiser also trains Kelly Ripa.) Kaiser told E! News that Shakira works out five days a week, keeping her training schedule consistent. Two out of those five days, she works out twice. That said, she never keeps her workout consistent, because she doesn’t want her muscles to get too comfortable.

“You need multiple types of muscular contractions and angles, as well as tempos,” Kaiser told Women’s Health. “If you do the same motions over and over, you’re not going to get the full benefit.” In order to keep Shakira’s muscles working, she changes the singer’s workout almost every day. “We alternate between strength and cardio intervals,” Kaiser told E! News. “Some days, we do just cardio and then strength and some days we start with strength and then do cardio, we like to mix it up.” Before tours, the pair build Shakira’s endurance so she can maintain a high level of energy throughout her entire show—and perform every night.

In order to make the most of her workouts, Shakira asks about the different muscle groups each exercise targets, her trainer revealed. “She’s very smart, and she wants to learn about the body, and she wants to know why she’s doing what she’s doing and what her goal is, what she’s trying to accomplish,” Kaiser told W magazine. “And that’s why we’ve had such a long relationship, because she knows what a stickler I am for functional smart training, but I also make it really fun.”

If you want to try Shakira’s abs workout at home, you’ll want do bodyweight exercises that target all three muscle groups in your abs:

the transverse abdominis (deepest layer),

the rectus abdominis (middle layer),

and the external and internal obliques (the muscles on your sides).

Planks will get your transverse abdominis working, while you’ll want to rotate your torso to work your side abs with bicycles, side swims, swizzles, and screwdrivers.