Popsugar Health & Fitness Arm Exercises Best Arm Exercises If Today Is Arm Day, Here Are 59 of the Most Effective Moves You Can Do 21 March 2018 by Jenny Sugar View On One Page Photo 32 of 59 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 32 Plank Jacks Begin in plank position with your feet together. Keep your upper body stable and engage your abs. Begin doing jumping jacks with your legs. Hop them wide, then hop them together. Jump as quickly as you want. Previous Next Start Slideshow Arm ExercisesStrength TrainingWorkouts