We should keep on regular sleep rather than stay up

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As we all know.Staying up is bad for our health.However ,many people still choose to sleep very late.They never take care of thier body health.As a matter of fact.The side effects of staying up will appear soon.Keep on a regular sleep habit is the basic requirements for everyone.Scientific evidence suggests that peple who stay up late are liable to sudden death.They have a higher chance of getting cancer.In order to keep us healthy,we are bound to refuse to stay up late.Why not keep an scientific sleep habit from now on.