what the hell kind of question is this? its like asking what is the meaning of life.

we sleep because we have to. our bodys take about 8 hourts and turn that into a hyper recharge period, where basically all it does is breath and store energy.

<!--how old do you have to be to know this. i'm sorry but there are just some questions that are stupid, at least for a compitent person.-->*snip* Please be respectful. ~ Leeza