Dumbbell Alternating Curls and Hammer Curls both works the biceps and are normally integrated in the bicep workouts. Now, each exercise has its pros and cons. When it comes to Alternating Dumbbell Curls, the focus is in the biceps, while in the Hammer Curls the emphasis resides in the brachialis muscle. #bicep #biceps #bicepworkout #arm #arms #armsworkout #muscle #gym #gymtip #gymtips #gymhack #workout #exercise #trainer