Why Do We Need to Sleep?

(A Fun and Sciencey Look at Why You Need Your ZZZs) Have you ever wondered why you feel super sleepy at night? Or why grown-ups are always telling you to go to bed—even when you’re not tired? Well, it turns out that sleep is like magic for your body and brain, and scientists have figured … Read more

Why Do We Yawn?

Have you ever been sitting in class, listening to your teacher, and suddenly—YAWN!—your mouth stretches wide open, and you take a deep breath? Maybe you weren’t even that tired, but you yawned anyway. Why does that happen? Scientists have been studying yawning for a long time, and while we don’t know everything about it, we … Read more