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 4 of 59 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 Overhead Triceps Extensions Stand with your feet hip-distance apart. Hold one dumbbell (go for your heavier weight) with both hands, bending the elbows behind your head. Straighten your arms to lift the dumbbell into the air and then slowly bend the arms to lower. This counts as one rep. Previous Next Start Slideshow Arm ExercisesStrength TrainingWorkouts