Patricia Cameron-Hill and Shayne Yates are among the world's experts on stress and humour. They know what they are talking about and have an entertaining way of saying it.
Their careers as a nurse and doctor give them an understanding of health, wellbeing and the consequences of stress. (It also gives them credibility with audiences.)
Laughter medicine is what they prescribe and laughter is what they dispense to their audiences. As people relax and laugh they are more receptive to ideas for making the needed changes in their lives.