It’s in NY TIMES today: The act of laughing releases a lot of endorphins and make you feel much better all day long!
For those who don’t have patience to go through all the article (everybody has work to do, right!?), this is a brief sumup:
I always associated the good feeling promoted by laughing to something psychological. Like, if you think in positively, you’ll act positively too. But it turns out, that it has much more to do to the endorphins released by the physical exercise. Have you never laughed so much it hurted?