Popsugar Health & Fitness Plank Plank Exercises For Abs These Are the 35 Most Effective Plank Exercises For Carving Your 6-Pack 15 August 2018 by Jenny Sugar View On One Page Photo 16 of 36 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 16 Circling Plank Begin in an elbow plank with your forearms resting on the top of a ball. Keeping your core strong and your body still, use your arms to roll the ball in small counterclockwise circles. Circle in the other direction to complete the rep. Previous Next Start Slideshow PlankArm ExercisesWorkoutsAb Exercises