Yawning

It's annoying when people say, "Are you tried?" after they see me yawning. My response is typically, "No, I'm getting oxygen to my brain." I heard that from somewhere. People yawn to get oxygen to their brains. It also typically means they are tired. Yawning is also contagious. Once someone yawns, other people around them are likely to yawn too. My brother read a story about yawning during his SAT's and started yawning. He noticed that most of the people in the room yawned while reading that story too. I bet you are yawning while reading this blog post. ;)