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 26 of 36 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 26 Arm Circle Planks In a plank position, reach your left arm back and then circle it overhead, bringing your palm back to the floor; repeat on the other side. This counts as one rep. Previous Next Start Slideshow PlankArm ExercisesWorkoutsAb Exercises