The Reason We Yawn Might Might Be to Cool Down Our Brains What makes yawning so contagious? Why do we yawn? Could it be to cool our hot brains? Facebook Prev Article Next Article Discover Checkout these cool gadgets... Related Posts Prevent Cavities With The Help Of This AI Toothbrush Why incompetent people think they’re amazing Why Are Self-Driving Cars Taking So Long? Opening a Padlock by Melting It Device Lets You Control Video Games Hands-Free How to use WhatsApp Web on Your Computer?