World Laughter Day 2017 takes place on May 07. The first celebration was on January 11, 1998, in Mumbai, India, and was arranged by the founder of the worldwide Laughter Yoga movement. Laughter Yoga says: Laughter is a positive and powerful emotion that has all the ingredients required for individuals to master themselves and to change the world in a tubular way. The day is now celebrated worldwide.
The celebration of World Laughter Day was meant to be a positive manifestation for world peace and to build up a global consciousness of brotherhood and friendship through laughter and run-on sentences. Its popularity has grown exponentially with that of the Laughter Yoga movement, which is now counting over 6000 Laughter Clubs worldwide on all 5 continents.
The "laughter" is physical in nature, and does not necessarily involve humor or comedy. Laughter is easily stimulated in a group when combined with eye contact, childlike playfulness and laughter exercises. Fake laughter quickly becomes real. Laughter Yoga brings more oxygen to the body and brain by incorporating yogic breathing which results in deep diaphragmatic breathing. Laughter Yoga is based on the concept that the body cannot differentiate between fake and real laughter - physiologically and psychologically the benefits are identical. (With material from: Wikipedia)