The pectoralis major muscle originates from multiple locations, including the costal cartilage of ribs two through six, the sternum, the medial half of the clavicle and the external oblique fascia.

Your pectoralis major is a large and powerful chest muscle that’s shaped like a fan. It starts from two sections: your breastbone (sternum) and your collarbone (clavicle). The two sections come ...

Do you want to change the shape of your body through exercise? Or maybe you’re an athlete who wants to improve your swing or throw. If so, building your chest muscles can help achieve these results.

You use your chest muscles every day with simple movements like pushing open a door or picking up a toddler. Powerlifters need those strong pec muscles to lift heavy with the bench press. Building a ...