Studying learning by making students work very hard, because they must learn by doing, so if you do not try, and have the capacity, the results lead to learning disabilities, study, some did not graduate , have left school, or down keys. Also, if you are not in good health, do not take care of yourself, then it should not choose this path, because many people learn by doing more, so every day is only 4 hours of sleep hours.
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