First of all, it's necessary
to keep a balanced diet. We should eat less junk food and eat more vegetables and fruit
which contain lots of vitamins. Second, keeping a good mood is also good for our
health. We should always have an active attitude towards life. Third, make sure we
take regular exercise every day. Running or walking, simple as it is, has a positive
effect on our health. Fourth, we should wash our hands often and don't smoke or
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