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, ...

You may have rolled your eyes as a teen when an adult told you to “stand up straight” or “stop hunching your shoulders,” but they had a good point: poor posture can lead to misalignment, muscle and ...

Feeling that tight, burning or sharp ache in your chest when you’re pregnant can be really unsettling, but the vast majority of the time, it’s your body adjusting to the baby, hormones and extra ...