Sydney, Australia: I walked into my first laughter yoga class expecting to see a hippie in a tie dyed shirt and leggings. I did not expect my yoga teacher to be a lawyer. And I certainly didn't expect to be rolling around on the floor laughing with a bunch of people I'd never met before. But that's exactly what happened.
Two women are planning to set up laughter clubs in Zimbabwe, one of the world's most challenging economies.
"Forced laughter is a powerful, readily available and cost-free way for many adults to regularly boost their mood and psychological wellbeing," said Charles Schaefer, psychology professor at Fairleigh Dickinson University in Teaneck, New Jersey.