Have you ever noticed how difficult it is to frown at a person who is smiling at you? Turns out that smiling is evolutionary contagious! Also, did you know that children smile at least 400 times a day while the average adult only 20? And, that if you mimic a smile even if you don't feel like smiling will trigger happiness inside?
Ron Guttman's inspiring talk on Ted.com will surprise and make you smile while watching it and beyond. Guttman's terrific after the jump.