Set up for the lying high pulley cable curl by positioning a flat bench in front of a cable machine.
Attach a straight bar to the high pulley cable and select the weight you want to use on the stack.
Sit on the bench with your back to the cable machine and grasp the bar with an underhand grip (palms facing you). Your hands should be 6-8 inches apart.
Lay back on the bench so your head is at the end closest to the cable machine.
Keeping your upper arms fixed, slowly curl the bar towards the top of your head.
Squeeze the biceps at the top of the movement, and then slowly lower the weight back.