Popsugar Fitness Sports Simone Biles's and Jordan Chiles's Gymnastics Ab Workout Want to Know What a Core-quake Feels Like? Try Jordan Chiles's and Simone Biles's Ab Workout June 28, 2021 by Samantha Brodsky View On One Page Photo 5 of 30 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 5 Round 2, Exercise 1: Superman Pulse Lie face down on your stomach with your arms and your legs extended. Keep your neck in a neutral position. Keeping your arms and legs straight (but not locked) and torso stationary, simultaneously lift your arms and legs up slightly off the floor. Lower back down to complete one rep. This is less movement than a full-motion Superman lift (think of the movement as pulsing up and down). Do 20 reps. Previous Next Start Slideshow Jordan ChilesSimone BilesAthletesSportsBodyweight ExercisesGymnasticsCore ExercisesGIF Exercises