why do we have to sleep? to rest- right- but what is the "rest" doing?

http://www.wsu.edu/NIS/Universe/sleep.htm

I believe it's building or repairing cells.

"If the many hours of sleep accomplish nothing, it is the greatest mistake nature ever made."

 

quoted from Dr. Allan Rechtschaffen, U of Chicago

"If the many hours of sleep accomplish nothing' date=' it is the greatest mistake nature ever made."

 

quoted from Dr. Allan Rechtschaffen, U of Chicago[/quote']

 

Yeah, sleeping kicks ass!

is there a way a person can reduce amount of sleep one needs (like so u wont feel tired after a lesser amount of sleep)? not doing as much work or or sleeping prior doesnt count

is there a way a person can reduce amount of sleep one needs (like so u wont feel tired after a lesser amount of sleep)? not doing as much work or or sleeping prior doesnt count

Yes and No, depending on which part of sleep you are talking about.

 

I think that sleep could be divided into two parts: necessity and luxury. Necessity is the part of sleep that you have to have; and the luxury is the part that you could have it and not have it. Just like after dinner then have some dessert. The dinner part is necessary for your health, however, the dessert part is only for luxury. You can reduce this luxury part of sleep any time you want.