The difference between fun and laughter? You can have fun without laughing. Some people, sadly, can even laugh without having fun. To my knowledge, there are vast collections of studies about the healing powers of laughter and humor. But I still haven't found anyone researching the physiological, psychological or sociological benefits of fun.
Pedro Hernandez (Mexico): I have been a professional Hatha Yoga teacher for 10 years - practicing for 30 - and own a Yoga studio in Mexico City. I participated in a Laughter Yoga session for the first time in January 2008 and the effect was profound, almost similar to some of the rare experiences I have had during either Hatha Yoga or meditation classes in 30 years of practice.