The back pull-down is a weight-bearing exercise that primarily trains the lats. The movement is performed in a seated position and requires mechanical assistance, usually consisting of a discus, pulley, cable, and handle. The wider the handshake, the more the training will focus on the lats; conversely, the closer the grip is, the more the training will focus on the biceps. Some people are accustomed to putting their hands behind their necks when pulling down, but many studies have pointed out that this will bring unnecessary pressure on the cervical vertebral disc, which can lead to rotator cuff injuries in severe cases. The correct posture is to pull the hands to the chest.