Why do you think we require sleep? Why do you think some of us require more sleep than others? @mathstudent55 @thomaster @Abhisar @wio @e.mccormick @Compassionate

Question

compassionate · Answer

You need sleep because your biological processes aren't perpetual as that violates the first law of thermodynamics. 

It's suggested that growing bodies require more sleep because they produce and exhaust more energy 

No one really understands sleep, as it is a controversial topic.

e.mccormick · Answer

One of the big things they have noticed with sleep deprivation is mental status changes.  If the body works or rests, a lack of natural sleep can cause the mind to have problems.  So some sort of mental maintenance is going on.