This exercise uses a single dumbbell held between both hands to work the triceps. · Sit on a short, straight backed bench with your feet planted firmly on the floor. · Drawing your abs in, grasp the dumbbell with both hands with a palms up grip. · Raise the weight over your head, this is your starting position. · Lower the dumbbell in an arc from above your head to behind your back. · Slowly return to the starting position.