Have ou heard this joke, Neil? Question: what's a rat's favorite game?I don't know, Sam, what is a rat's favorite game?Hide and squeak!Ha-ha-ha! Very funny!Well, I'm glad you're laughing because, as we'll be finding out in this programme, laughter is good for you! In fact, laughter is often called 'the best medicine'.And it seems that's really true, medically speaking. laughing releases anti- st..