Popsugar Health & Fitness Arm Exercises Best Plank Variations This Is the Ultimate Move For Sculpting Arms and Abs — Try These 30 Variations 26 July 2018 by Jenny Sugar View On One Page Photo 8 of 30 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 8 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 Arm ExercisesWorkoutsAb Exercises