Hold bar (palms up) and lie on bench (45 degree angle) in good body alignment (abs tight, chest up, back straight) with feet in comfortable position. Position arms perpendicular to the floor. In a controlled motion, keeping upper arms perpendicular to the floor, bend elbows to lower bar until forearms are approximately parallel to the floor. While maintaining the controlled motion, return bar to starting position. Contract triceps fully, without compromising form. Do not allow muscle to relax before next repetition.