Here’s a complete dumbbell arm workout: Best for Biceps: Hammer Curls – 3 sets of 10 reps Best for Forearms: Zottman Curls – 3 sets of 12 reps Best for Shoulders: Overhead Press – 3 sets of 10 reps Best for Triceps: Spoon Press – 3 sets of 15 reps Great for Shoulders: Upright Rows – 3 sets of 15 reps