Max Philisaire Online

The chest muscles are made up of the pectoralis major and the pectoralis minor. The pectoralis major is the bigger of the two and spans most of the clavicle and sternum and attaches to the upper arm. It has several important functions at the shoulder: flexion, adduction (towards body), and medial (inward) rotation. The pectoralis minor is a thin triangular muscle that lies beneath the pectoralis major and is responsible for similar functions. Your chest is helpful in contact sports that require a lot of pushing such as football and rugby.