Popsugar Fitness Workouts Best Core Exercises I'm a Trainer, and These Are My 16 Favorite Ab-Sculpting Exercises August 24, 2018 by Tamara Pridgett View On One Page Photo 1 of 16 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Tuck Jump Start in a squat position with your feet hip-width apart and arms down, making sure your knees are in line with your feet. Swing your arms up and jump into the air, bringing your knees up toward your chest so they go past your hips. Land, with your knees slightly bent, onto the balls of your feet for a quiet landing. Without pausing for the next rep, repeat the motion. Previous Next Start Slideshow WorkoutsStrength TrainingCore ExercisesTrainer TipsAb Exercises