With the news of the world's first "Tickle Spa" opening in Madrid last week, the BBC's James Coomarasamy spoke with Carrie Graham, a Laughter and Happiness Coach based in London.
Graham conducts laughter workshops in which participants are "pretend tickled" if they're not familiar with each other, and full-on tickled if they are.
Naturally, Graham had to try out a little tickle therapy on her BBC interviewer.
Have a listen:
http://stream.publicbroadcasting.net/production/mp3/michigan/local-michigan-977436.mp3
Feel better? You can listen to the full interview from the BBC Newshour (click on chapter 10).