For a long time, little research was done to link health and happiness, but now the tides are turning. Study after study looks for connection between the two. So, what's the verdict? Are healthy people happier? Are happy people healthier?
When was the last time you laughed? Chances are, you've already done it today. Laughter has social, psychological and physiological functions -- some researchers are even looking to use laughs in therapy. Test who will have the last laugh: you or the Ultimate Laughter Quiz.