Add Yahoo as a preferred source to see more of our stories on Google. Your heart beats nonstop to deliver blood to every part of your body, but it gets an assist from another pump that probably needs ...

Your calf muscles are often referred to as the 'second heart' because they play a crucial role in pumping blood around the body and supporting cardiovascular health.

When heart muscle gets damaged, the result is often permanent. Unlike other muscles in the body, the heart has long been believed to lack the ability to heal itself. But recent research suggests that ...

As I’m typing these words, I don’t think about the synchronized muscle contractions that allow my fingers to dance across the keyboard. Or the back muscles that unconsciously tighten to hold myself ...