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 11 of 30 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 11 Elbow Plank With Hip Dip From an elbow plank, slowly rotate the spine to lower your left hip to just above the floor (about one to two inches from the ground). Come back to elbow plank. Now lower the right hip toward the floor. This counts as one rep. Previous Next Start Slideshow Injury PreventionStrength TrainingWorkoutsAb Exercises