health and wellness Video: How an Indian doctor came up with laughter yoga and made it an international movement Though the science behind laughter therapy remains a mystery, more than a hundred countries have formed active clubs to promote it. Ramakrishnan M Jan 23, 2018 · 04:00 pm Play Editor: Joel George |Design: Shruti Rego, Kimberly Pereira, Rubin D'Souza, Anirudh Ashar We welcome your comments at letters@scroll.in. Laughter Health Yoga Therapy