When I was younger, I honestly believed the heart looked exactly like the red shape in cartoons. You know the one, perfect curves, cute and neat. I was very wrong. Your real heart doesn’t look like that at all. It’s a strong muscle sitting inside your chest, slightly to the left. It’s about the size of your fist. Make a fist right now. That’s roughly how big it is. Small… but incredibly powerful. What Does It Actually Do? Think about a water pump that pushes water through