The Heart

The human heart is a muscle about the size of your fist, and it works like a pump to keep you alive. It beats all day and night, moving blood through your body. The blood carries oxygen and nutrients to your cells and takes away waste. The heart has four parts, called chambers, that work together to keep the blood flowing. Taking care of your heart by eating healthy foods, exercising, and not smoking helps it stay strong and keep you feeling great!