Cable Seated Rows target the large muscles in your back.
Sit at a low pulley machine with your feet resting against the footrests and your knees slightly bent. Sit in an upright position, keeping your abs tight and your back straight.
Lean forward slightly and grasp the pulleys then return to your upright position. Keeping your elbows close to your chest, slowly bring them back. Pause at the top of the contraction and slowly return to the starting position.
Keep your back upright through the entire exercise.