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 High-Pressure Water Gun Bores Through Barriers The Trouble with Transporters Can This Carbon Nanomaterial Solve Global Warming? General Relativity & Curved Spacetime Explained! The Future of Brain-To-Brain Communication 13 Misconceptions About Global Warming