Andrew WeilMadan Kataria, M.D., "the guru of giggling" (The Times, U.K.), is the founder of the laughter yoga club movement that started in 1995 in Mumbai. He has conducted seminars and workshops around the world for such organizations as UBS, Emrates Bank, IBM, Hewlett-Packard, and Volvo. He has also been featured on The Oprah Winfrey Show, CNN, and ABC, and is associated with an increasing number of medical research projects analyzing the benefits of laughter. Retired from medical practice, he devotes all his time to writing, teaching, coaching, and training laughter leaders in order to foster the spread of laughter clubs. He is the creator of World Laughter Day, which is celebrated on the first Sunday of every May.

Andrew Weil, M.D. (foreword) is the New York Times bestselling author of numerous books, including Spontaneous Happiness, Spontaneous Healing, and Healthy Aging. A world-renowned pioneer in the field of integrative medicine, he is the founder and director of the Arizona Center for Integrative Medicine at the University of Arizona Health Sciences Center. Read More Read Less