Laughter can be contagious!!!

Don't miss:

1. Vietnamese turn to laughter yoga to stay fit...
2. Swiss politician Hans-Rudolf Merz has a laughing fit in parliament!!! 
3. Federer: So Rafael, what you getting me for Christmas?
4. Yoga laughter therapy!!! Hilarious...
5. Can you watch this without laughing?
6. Laugh, and the world laughs with you...
7. Yoga laughter therapy!!! Hilarious...