A funny thing happened on the way to the plastic surgeon. Researchers looking at Botox, the injection widely used in Hollywood to smooth over facial creases and crow’s feet, have found that the mere act of smiling — even the most insincere “I don’t want to pose for this photo” kind of smile — makes depressed people feel less depressed. Meanwhile willful smiling makes non-depressed people even happier than they already are. And frowning makes people feel worse. Who knew? (Hmm. The creator of the all-natural smile, maybe?)

Source: Los Angeles Times, May 22