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（西安医学院--大学英语）
Many people feel the health of American children is in trouble. In fact, 40% of children aged 5 to 8 may be unhealthy already. For example, many are overweight and have high blood pressure. Doctors believe that these conditions are the result of physical inactivity.
In many countries in the world, all school children have to do one hour of exercise every day. These exercises may be simple, such as running or jumping. Doctors believe that habits learned early are more likely to stay with us through life. School is the perfect place to learn these habits. Active, healthy children who exercise regularly can become active, healthy adults.
In many countries in the world, all school children have to do one hour of exercise every day. These exercises may be simple, such as running or jumping. Doctors believe that habits learned early are more likely to stay with us through life. School is the perfect place to learn these habits. Active, healthy children who exercise regularly can become active, healthy adults.
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