Growing up, I have read some news about sleeping. Now I have found their connections after I recalled them. In short, plenty sleep makes you smart, lacking sleep will damage your brain.
http://books.google.com.hk /books?id=7e1DAgAAQBAJ&lpg=PT156&ots=otkN-z7mDl&dq=长睡 思考 短睡&pg=PT156#v=onepage&q&f=false
In my mind, the first news about sleep that I read was: short sleepers are more energetic, while long sleepers are good at deep thinking. I forget the news source, but I find a similar artical. The following link is English version:
This atrical mensioned that very creative, concered persons both in art and in science often are long sleepers, like Einstein.
Last year, I saw a piece of news that reads Sleep 'boosts brain cell numbers'
That's why Einstein is so clever!
Then I saw an atrical says "a lack of sleep affects the activity of more than 700 of our genes"
This month, I saw an research result, it says "Sleep loss may cause brain damage". Although researchers only did this experiment on mice, but maybe it also works on human beings.
So, in order to have a healthy and smart brain, everybody go to sleep!