Originally appeared on the NOVA Web site Cut to the Heart. Sure, you know how to steal hearts, win hearts, and break hearts. But how much do you really know about your heart and how it works?

Did you know broken heart syndrome is real? Super stressful events, like a death or a divorce, can trigger chest pain. Spooky but true. If doctors removed your ticker, it would keep beating for a ...

A healthy heart drums up a steady rhythm. It beats around 60-100 times per minute when you're resting. If you have atrial fibrillation, though, your heart can beat out of rhythm, too fast ...

Sure, you know how to steal hearts, win hearts, and break hearts. But how much do you really know about your heart and how it works? Read on to your heart's content! Put your hand on your heart.