Get ready for the ultimate pump.

THE CHEST IS a muscle group that takes up a great deal of attention for physique-minded guys. If you pause a moment to think about why, you won't need long to figure out the appeal of chest-pumping ...

Muscle contraction is the tightening, shortening, or lengthening of muscles when you do some activity. It can happen when you hold or pick up something, or when you stretch or exercise with weights.

Here's what actually happens when you "pull" a muscle. The human body has three types of muscles skeletal, cardiac and visceral. But we can only control, and damage, our skeletal muscles. These are ...

If you've spent any time lifting weights, you've probably noticed your muscles looking noticeably bigger during or right after a workout. It's a satisfying reminder that you actually did something, ...