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 4 of 30 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 Plank With Shoulder Tap In a plank, alternate bringing your hand to the opposite shoulder without allowing your torso to twist. Previous Next Start Slideshow Arm ExercisesWorkoutsAb Exercises