imagine the humans remain waken throughout their life time. What actually happens if we do this is, that we will not be able to slow down the gathering of information. Therefore we may not be able to analyse, process the information in a clear way so that we could understand better. According to latest findings, scientists had discovered that there are 2 sections in our brain: Unconscious and conscious brain. When you are awake, you are using your conscious mind. Here, you will be acquiring information from your senses. But how do we save them? So, in order for those memories to get saved you will need some sleep.When you are sleeping you use your unconscious mind. So one of the main reason why you want to sleep is due to memory. And the other is you can get the maximum of your brain when you are sleeping. Sounds weired?
Let me tell you a simple example. Imagine that you are about to choose something from a given varieties of information. For example, when you are choosing your vehicle. At a glance if you choose something, it is more likely to make mistakes but if you think about it in your leisure times and then make your selection, it is more likely that this selection is confident. When you are sleeping, there are alpha waves in your brain being emitted. In this condition you are in fresh and calm mind and you can think more critically that you were awake.
I have written a post regarding this matter with more detail and some tips where you can use your depth mind (unconscious mind) in variety of applications.
Link: http://globaltutor.b...-everybody.html