Popsugar Health & Fitness Injury Prevention Ab Exercises Carve a Strong, Chiseled Core With These 30 Ab Day Exercises 26 January 2018 by Jenny Sugar View On One Page Photo 15 of 30 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 15 Reverse Crunch Lying on your back, lift your legs in the air with your knees bent. Place your hands on the floor beside you. Without momentum, use your lower abs to slowly curl the hips off the floor and into your chest. Slowly lower them back to the starting position. This counts as one rep. Previous Next Start Slideshow Injury PreventionStrength TrainingWorkoutsAb Exercises