What is the function of the Pectoralis Major muscle?

The Pectoralis Major muscle plays a crucial role in shoulder adduction, which is the movement of bringing the arm closer to the body's midline. This muscle is situated in the chest and is primarily responsible for movements involving the upper arm, especially during actions such as pushing, pulling, and lifting. In addition to shoulder adduction, the Pectoralis Major also assists in flexion and internal rotation of the shoulder joint.

Understanding this function is essential for yoga practitioners and teachers, as many yoga poses require a combination of shoulder movements, including adduction, to stabilize and enhance asanas effectively. Recognizing how the Pectoralis Major contributes to upper body movements can help in designing balanced sequences and ensuring proper alignment during practice.