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.

BALTIMORE – A torn pectoralis major muscle, or pec muscle, is a serious injury striking boxers, pro wrestlers, body builders and even a growing number of military servicemen. It's a condition that ...

The pectoralis major muscle is a large muscle in the upper chest, fanning across the chest from the shoulder to the breastbone. The two pectoralis major muscles, commonly referred to as the ‘pecs,’ ...

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 ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." You don’t necessarily need a bulky set of dumbbells to get the chest muscle activation you seek.

Between my job as a writer and my large breasts, I’ve found that at the ripe age of 33 my posture is seriously not OK. I always knew this, but in the past few years, my shoulders have gone from ...