Jennifer Lopez Shows off Sculpted Booty in Lower Body Workout

Jennifer Lopez is no stranger to the gym, as evidenced by her many bikini sightings as of late. She and her beau, Alex Rodriguez, have been hitting the gym together this summer, but on Friday she worked out alone with her trainer, David Kirsch.

Kirsch shared an Instagram video of J.Lo's lower body workout in which she was doing platypus walks set to the tune of Justin Timberlake's "Señorita."

#kirsching @jlo this morning #Emilia making sure her #platypuswalks were on point. #madisonsquareclub #fitness #energy #sculpting #bootilicious #killingit

A post shared by David Kirsch (@davidkirsch) on

"@jlo this morning,” Kirsch posted on Instagram. “#Emilia [Kirsch’s daughter] making sure her #platypuswalks were on point.”

The platypus walk, which consists of Lopez holding a squat and walking from wall to wall, targets the glutes and quads for an awesome thigh and booty workout. No wonder the 48-year-old has buns of steel!

Lopez works with trainers like Kirsch and Tracy Anderson four to five times per week. “With her busy schedule, that’s a lot,” Anderson previously told PEOPLE. “It can be anywhere from 30 minutes — if her kids need her for something, because she’s always there for them — to an hour or hour and a half.”

Check out her workout here, which Anderson says is a creative, functional and total-body toning routine.

Anderson also says that Lopez's diet is crazy strict and cuts out all processed foods, sticking to organic food for every meal, snack and everything in between. She eats plenty of protein, fruits and veggies for a super nutrient-rich diet.

Ayyyyy... 😂

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For breakfast, Lopez sticks to a protein shake and a cup of decaf coffee. When lunchtime rolls around she'll usually have a veggie-heavy salad with salmon. And for dinner she'll make sure to pair a protein, like pork or chicken, with a grain, like quinoa.

“It’s all organic and it’s all very well thought out, with the balance of very high quality proteins and a lot of nutrient-dense food,” Anderson told PEOPLE. “Everything is fresh. There’s nothing processed – just [protein powder] in a shake if we do a protein shake one day.”

“Throughout the years I’ve learned the importance of maintaining a healthier […] diet,” Lopez previously told PEOPLE. “I still eat some of the foods I love, but in moderation. I don’t deprive myself.”