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There is an old saying， "Laughter is the best medicine． "Now people are using laughter to（1） 　　their health all around the world． In some countries special centres for treating（2）____ with laughter have been set up and become popular． In 2003， a study showed that laughing helped the sick get better （3） 　　than the usual treating ways． It made them relax， and（4） 　　was helpful for their general health． Laughing helps us feel happier． And（5）___ 　say five minutes of laughing is as good for you as fifteen minutes in the sports hall． It also gives the body exercise．