Popsugar Fitness Workouts Cardio Ab Exercises Do Any of These 9 Moves to Blast Calories and Tone Your Abs at the Same Time June 6, 2017 by Dominique Michelle Astorino View On One Page Photo 9 of 9 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 9 Quick Skips Begin by standing with your feet hip-width apart. Make a fist with both hands and bend the elbows to where your hands are about level with your chin. Drive the right knee up, twist your torso to the right, and bring the knee to meet your left elbow. Immediately repeat with the left knee meeting your right elbow, and do this in a hopping motion while staying on the balls of your feet. Keep your abdominal muscles engaged as your knees come up, and squeeze the side oblique muscles as you twist. Previous Next Start Slideshow WorkoutsCardio WorkoutsCardioBodyweight ExercisesGIF ExercisesAb Exercises