Chemists have been studying why people cry. They say the body produces two kinds of tears. One kind cleans out the eye if it gets dirt in it. But when people cry because of their feelings, these tears have poisonous chemicals in them. The body is getting rid of chemicals produced by strong feelings.
In the United States men have heart diseases more than women do. Doctors say heart diseases and some other diseases are related to the pressures(压力)of living and working in a modern society. Perhaps men suffer more from these diseases because they don't cry enough. And it is true that more and more women work outside the home, so they will also suffer from more pressures. Then they will need to cry more.
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