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 How People Disappear Should We Live On Venus Before Mars? How aspirin was discovered – Krishna Sudhir This Fluoride Battery Could Mean Phone Batteries That Last a Week Discover – Baths and Quarks Genetic Engineering Will Change Everything Forever
