A good belly laugh can uplift and relax you just as exercise does. Researchers at Osaka University in Japan recently found that watching a funny movie was more effective at decreasing mental stress than viewing landscape scenes, for instance. So pop a comedy into the DVD player after work, sign up to receive a joke-of-the-day email, or try laughter yoga. Make your own humour first-aid kit, suggests Beverly Beuermann-King, a stress and wellness specialist in Little Britain, Ont. Put cartoons, funny photos and email jokes in a file or on your computer, and pull them up when you need a boost.