Laughology (2009)

Documentary by film-maker Albert Nerenberg looking at the science behind laughing. After suffering a personal tragedy, Nerenberg became obsessed with staying upbeat and studied Laughology to help him and his wife through the difficult time. As he travels through Canada and the United States through to India, London and Tanzania, Nerenberg looks at why we laugh, how it can help us stay healthy and meets the man said to have the most infectious laugh.