If it's not funny, laugh anyway

According to this recent study, "diabetics may be better able to process the sugar they consume during meals if they order a side of laughter with their food."

This is just one of a growing body of research that demonstrates that laughter, even when you don't particularly feel like laughing, is good for your health. Much of this research was sparked by Norman Cousins, author of Anatomy of an Illness, who documented how watching films of the Marx Brothers and Candid Camera paved the way for his return to health.

In the last decade, this "laughing for the health of it" has sparked the creation of a new kind of Yoga, developed by Dr. Madan Kataria. Represented in the US by Steve Wilson of The World Laughter Tour, there is now a worldwide movement of "Laughter Clubs" where people meet, and, without cracking a joke, laugh themselves to health.