Description From the team behind the popular and award-winning A Hundred Billion Trillion Stars, this powerful picture book about energy and the human body is fun, informative, accessible, and perfect for classroom and family sharing. Did you know there's enough energy in your pinkie finger to power an entire city? And that everything you do - running, jumping, playing, and exploring - uses that same energy inside of you? In the companion to the acclaimed A Hundred Billion Trillion Stars, Seth Fishman and Isabel Greenberg explore the relationship between energy and the human body, breaking down complicated concepts into small, child-friendly segments. Seth Fishman's playful text explores the science behind the most energetic kids, while Isabel Greenberg's vibrant illustrations offer plenty for children to explore in multiple readings. Ideal for curious kids and classroom learning.