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The Science of Laughter

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is something that almost everyone enjoys. Scientists have found that it is not only a to jokes but also an important . When people laugh, their brains chemicals that and a of pleasure. These chemicals can also and for a short time. At the same time, ( 1 ). People who laugh together feel closer to each other and are more to one another. Researchers believe that early humans laughed to show others that they were safe and friendly. Interestingly, people laugh far more often when they are with others than when they are alone. In one study, people were about 30 times more to laugh in a group than by themselves. is also contagious. When we hear someone laughing, the prepares the muscles of the to smile, even if we do not know why the person is laughing. Some television comedy shows ( 2 ). They add recorded so that viewers at home will laugh along. However, does not always have a . People sometimes laugh when they feel or , and others can easily misunderstand this kind of . ( 3 ), laughing at someone instead of laughing with them can hurt that person's feelings and relationships. Scientists are now studying how different types of are produced in the . They hope that this will help people understand each other better and even to new ways of reducing .

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Q1cloze

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