This is theoretical and not an "exact" equation, however, for those who have actually laughed this way, it is entirely feasible... Check out the peer-reviewed research on proven medical benefits of laughter/humor on our database page:
Research demonstrates the amazing health benefits of laughter. Laughing can relieve stress, increase pain tolerance and support the immune system, as well as serve several other healthy purposes. Learn more about the positive health benefits of laughter and how to use humor to relieve tension, manage stress and improve overall health and well-being.