Nunilify or Useful?

When you rolled up your sleeve and prepared to donate your blood, have you ever think that your blood would be nullified rather than be used?「A bag of blood save one person.」We have heard this slogan for a long, and we usually regarded this slogan as truth. The notion would be changed, for there was a new statistics in Blood Center reported that thirty-two thousand bag of blood became invalid（almost two percent）.

How pity it was! But what was the reason? Ninety percent of unqualified blood resulted from poor condition of lung. But what was the reason made our lung fall into poor condition? The answer was 「drinking, smoking, heavy, and fatigue」, but there was another crucial reason-stay up late. Almost every college student form the habit of staying up late or all night, some people even reversed day and night. You are included, right? Those nightawk are destroying the function of their lung,and the blood would reflect health condiction.

When I first saw the news in the home page of yahoo, I was shoked and even cried out that aroused my roomates' attention. But their answers made me burst into laughter, they said '' LuLu , you always go to bed early, you don't have to worry about the news, but we are the one to worry about it!" I replied them ''Then, let's go to bed early together''

But.....
Will them go to bed with me? I really have no idea....
Will you go to bed earlier?For the sake of your healthy, you had better do it!!