Hammer Curls

Stand or sit gripping a dumbbell in each hand with the palms facing each other:

• Inhale and raise the forearms together or alternately.
• Exhale at the end of the movement.

This is the best exercise for developing the brachioradialis.

It also develops the biceps brachii, brachialis, and, to a lesser degree, the extensor carpi radialis brevis and longus.