The pectoralis major muscles become very tight when we repetitively use the improper posture of sitting hunched over while working on the computer, phone, or reading. The muscle develops trigger points which present as tender lumps in the muscle belly. One can reduce a trigger point by using a lacrosse ball or therapy ball to put pressure between the trigger point and the wall while maintaining pressure, incorporating small movements over the area, or pinning the trigger point and moving the muscle through the full range of motion. This is a great way to reduce tightness in the muscle and improve Upper Cross Syndrome.