Finally, something that feels good is actually good for you too. I've written about the benefits of laughter before, but scientists have recently discovered another reason to giggle more often.

In a study of 32 healthy men, researchers at Loma Linda University and Oakcrest Health Research Institute in Yucaipa, CA found that those who were exposed to something funny - like a comedic video - had 27 percent more beta-endorphins and 87 percent more human growth hormone in their blood. But here's the really good news: this hormonal increase was present even before the funny program began and it remained elevated even after the video was over.