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 Did You Know Planes Were Infested With Bugs? Most hurricanes that hit the US come from the same exact spot in the world Should we be looking for life elsewhere in the universe? – Aomawa Shields Amazing Water Property – Starting Fire in Water Why is all Sand the Same? Why 60 Seconds in a Minute ? And 60 Minutes in an Hour ?