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 ...

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.

Developing bigger pectoral muscles, or "pecs," is one of the most common goals for anyone focused on building upper-body strength or improving their physique. After all, a strong, well-developed chest ...

Medically reviewed by Sanja Jelic, MD Key Takeaways The diaphragm is the main muscle used for breathing. The diaphragm helps ...

Shoulder pain can significantly interfere with your exercise activities, but you can still safely perform an upper-body workout with a shoulder injury. The rotator cuff is a group of four muscles — ...

Giants left tackle Will Beatty tore his pectoral muscle on Wednesday, an injury that is not considered as serious as the dreaded ACL or Achilles tear, but is still serious enough to warrant a lengthy ...

When it comes to strength training your muscles for a sculpted, well-defined chest, you’re probably familiar with your pectoralis major muscles, the large set of muscles that stretch across the upper ...

The chest press is a classic upper-body strengthening exercise that works your pectorals (chest), deltoids (shoulders), and triceps (arms). For the best results and safety, it’s essential that you use ...