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.
"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.