Your biceps brachii is the muscle known as your biceps. Since your brachialis lies beneath, developing it will push your biceps higher. This workout trains both muscles by modifying an exercise every man is familiar with: the classic biceps curl.
How It Works Grab a dumbbell in each hand, choosing the heaviest weight that allows you to complete eight to 10 repetitions of the dumbbell biceps curl. For your first set, perform the exercise as described, with one exception: Use an overhand grip, your palms facing behind you at first. Do as many reps as you can, then rest for 60 seconds and perform a second set of biceps curls with a neutral grip (palms facing each other). Rest again for 60 seconds and do the move once more with an underhand grip, as shown. Repeat once for a total of two rounds. Do this workout twice a week.