[vitro]

If you are happy, you smile. But also, try to smile if you are not happy, it works both ways. Your mind projects itself in the body, but by controlling the body, you can influence the mind. With this said, I can imagine how re-labeling can actually have physical response.

[aytekin]

I love doing something similar with my small kids (4 and 2). I start laughing for no reason and when they see me laughing they start laughing. We laugh and have good time without any reason until we get tired. I also remember seeing some festival in India on TV. Everyone is laughing and having good time, for no reason.

[vitro]

Yes, with kids that works nice. Sometimes they are upset so I start to laugh for no reason until they cannot hold it anymore and start laughing as well. Well, sometimes they get even more upset, so use with caution.