This has been bothering me for a while. I have seemed to fall into a lapse of insomnia and I am finding it quite euphoric. I have slept seven hours in the past 120 hours...and put roughly 800 miles on my car at night driving around. I don't think I have any mental malfunctions but this is still bugging me. Why do we need to sleep? I know that horomones are generated during sleep and the body uses this unconscious state to repair and rebuild tissue structures. Physiologically why must we sleep? And how did homoerectus evlove to require sleep for 8 hours a day? I know that we would be much more productive in society if we didn't have to sleep. Just taking a break here from not sleeping to post. Sorry if there are errors or it seems choppy...................