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 It Is What Time It Is Five Intriguing Places Forbidden to Tourists Is It Possible To Stay Young Forever? What Would You See Inside a Perfect Sphere Mirror? Math Magic Eye controllable feeding robot for disabled people
