Your heart is like a super-strong pump that never stops working!It's about the size of your fist and sits in the middle of your chest, slightly to the left.The heart has four chambers - two atria on top and two ventricles on the bottom.When your heart beats, it squeezes to push blood through your body.The right side of your heart receives blood that needs oxygen and sends it to your lungs.The left side receives oxygen-rich blood from your lungs and pumps it out to your entire body.Your heart beats about 100,000 times every day, which is more than 35 million times a year!You can feel your heartbeat by placing your hand on your chest or finding your pulse on your wrist or neck.
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