Why Yawn?

Yawning is an odd activity that happens every once in a while to everybody. However, the true reason behind yawning was always arguable, and new studies reveal a new explanation to why people yawn. Some say people yawn because they are tired, and others say people yawn out of boredom. However, it seems that you also will yawn to cool off your brain. Yawning helps cool down your brain when it is "overheating". One researcher compared the brain to a computer, saying that the computer may need to cool down, and yawning happens to be how our brains control their temperature.