One of the most noticeable parts of growing up is, well, growing up. Your shoe size changes seemingly overnight, your shortest classmate can become your tallest over the summer, and your teeth are literally falling out of your head to make room for bigger ones. If you stop to think about it, being a kid is crazy: how does your body know it's time to spurt up a few inches? Where does the "stuff" come from to make more of you? And how does so much of it happen without you feeling it every minute of every day? Join pediatrician Dr. Tabitha Michaud to investigate the science of growing: how your cells communicate with one another to know when (and where) to grow; how your body turns food into new teeth, longer bones, and stronger muscles; and how your body tells you what's happening inside so that you can give it the nutrients and rest it needs.