Your heart is a muscular organ that helps circulate your blood, which delivers oxygen and nutrients to your tissues. There are four chambers and four valves in your heart, and each ensures proper ...

I’m a side sleeper, normally on my right side. I got hurt in a soccer game, and for a couple of nights I had to switch to sleeping on my left side. Right away my heartbeat felt louder and stronger. My ...

A heart murmur is an extra sound that can occur between heartbeats as blood moves through the heart. In babies, it is usually not a cause for concern. Sometimes, however, it can indicate an underlying ...