Pectoralis major is the largest and most superficial of the two chest muscles. Pec major and the anterior fibers of Deltoid work closely together. Pec fly and push-up exercises work the Pectoralis major.
- Medial 1/2 of the clavicle
- Costal cartilages of the first 6 ribs
- Intertubercular groove (between the greater and lesser tubercles) of the humerus
- Shoulder flexion
- Internal rotation
Shoulder Joint Muscles:
- Lateral and medial pectoral nerves
- Using roll-on deodorant
How can I stretch it?
How can I strengthen it?