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 Why Is Mixing Prescription Drugs Deadly? Why Scientists & Artists Want the World’s Blackest Substances Math Magic 24 Accidental Scientific Discoveries That Changed the World Scientists Make an Awesome Error That Could Save Our Planet from Plastic Hell Norway to become europes green battery
