What happens when you take a deep breathe? Woosh! Air rushes into your lungs. Your lungs help you get the air you need to live. They work with your heart to send oxygen around your body and get rid of waste you don't want. And that's not all! Explore what's inside you with fun text, bright pictures, and lively illustrations. Glossary of key words Index Table of contents Our bodies are super machines that keep us moving, learning, and having fun. But how do they work? The secret is inside! Explore different body systems, what they do for us, and how to keep them healthy. Each book pairs colorful illustrations and photographs with engaging text and fun facts

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