Sit on the bench pad so that the cables are behind you. With your feet and butt on the bench pad, grab both handles in a supinated position and keep a neutral back position. Bring the handles to your shoulders and keep your upper arm by your sides at all times. Keep your arms relatively close to your upper body and use your biceps to curl the weight up. Finish when the handles are close to your shoulders and lower yourself slowly to the starting position. Do not use momentum or swinging to keep the tension in the targeted muscles.