Why I Sneeze, Shiver, Hiccup, and Yawn (Let’s-Read-and-Find-Out Science 2)

Ka-choo! Brrr. Yawnnnn.Have you ever wondered what makes you sneeze when you're in a dusty room? Or shiver when you get out of the bathtub? Or yawn when you're tired? All of these actions are reflexes. Your body makes them happen even though you don't tell it to.Bud More »