Chiseling a toned chest: A complete chest workout for men at the gym

The Muscles: An Overview

Your chest muscles are composed of the pectoralis major and minor. The pectoralis major is the bigger chest muscle and travels from the collarbone to the sternum, attaching to the upper arm. The purpose of this muscle is flexion and adduction of the shoulder as well as inward shoulder rotation. The pectoralis minor is a small triangular muscle located under the pectoralis major and also helps with shoulder flexion, adduction and rotation.