A basic pair of dumbbells make it possible to work your arm muscles from every angle—think your delts (shoulders), biceps (fronts of your upper arms), and triceps (backs of your upper arms ...

Rambod made the Persian Wolf focus on both his biceps with the exercise, calling it the “Crazy Bicep Workout.“ Doing the unilateral bicep curls helps you attain muscle symmetry in both arms as ...