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 5 of 59 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 5 Bent-Over Reverse Fly Holding a dumbbell in each hand, stand with the knees slightly bent. Keeping your back flat, bend forward at the hip joint. Exhale and lift both arms to the side, maintaining a slight bend in the elbows and squeezing your shoulder blades together. Then, with control, lower the dumbbells back toward the ground. This completes one rep. Previous Next Start Slideshow Arm ExercisesStrength TrainingWorkouts