The 10-10-10s exercise works your biceps, brachialis and brachioradialis.

-Armed and fabulous. Keeping your right arm bent at 90 degrees with your palm up. Keep it there while you curl your left hand to your shoulder 10 times and switch your arms so your left arm stays bent and your right arm curls. Then, finally, do 10 complete curls with both hands. For the second part of this move, change your grip so that your palms face each other, repeat the 10-10 sequence. And then for the third part, your palms should face down and then repeat the 10-10 sequence once again.