Need a Laugh? Hold a Pencil in Your Teeth
If you find yourself feeling blue and in need of a laugh, plop yourself down on the couch and switch on your favorite comedy. Oh, and grab a pencil and hold it between your teeth.
In 1988, psychologists found that subjects who held a pencil in their teeth while watching cartoons found them funnier than subjects who held a pencil with their lips. Why? Because holding a pencil with your teeth forces your mouth into a smiling position, while holding a pencil in your lips makes you frown. The ingenious study lent support to the facial feedback hypothesis, which states that facial movement can influence our emotions.