"What keeps you standing tall? Your bones! But they do more than just stop you from flopping on the floor. Your bones make up the frame of your body and support you. They protect your other organs and team up with muscles and joints to help you move. And while they're doing all this, they are living and growing, too! Explore what's inside you with fun text, bright pictures, and lively illustrations"-- Provided by publisher.

"What is that thing pumping in your chest to help you run, dance, play, and live your life? Thump-thump, thump-thump. It's your heart! With every beat, your heart pumps blood through your body to help you keep going. It sends out oxygen and takes out the trash. And that's just the beginning! Explore what's inside you with fun text, bright pictures, and lively illustrations"-- Provided by publisher.

"What do you use with every move you make? Muscles! You use muscles to do a cartwheel and lift a pencil. But they also help your heart beat, help you breathe, and work to break down food in your tummy. What could be mightier than muscles? Explore what's inside you with fun text, bright pictures, and lively illustrations"-- Provided by publisher.