You use your chest muscles, or pecs, all the time—when you push a door, lift a child, or even just sit up straight. They're a key part of your upper body strength. By exercising your chest regularly, ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images You don’t need to be a push-up pro to build upper body strength and muscle.

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 — ...