Why do we need to sleep? The answer for this question isn't obvious and the fact is that no one can answer this question without any doubt. It is commonly believed that sleep gives the body chance to recover after the day's activities. In reality, unfortunately, the energy which is saved by sleeping for eight hours is minimal. So how sleeping can help us to grow in strength? The answer for this question isn't clear as well as the answer for the first question.
One way to understand the role of sleeping is looking at what happens if we don't sleep. Lack of sleep has serious effects to our brain's abilities. After one night without sleep, concentration becomes difficult. If you continue without sleep, the part of brain which controls language, memory and planning doesn't work properly.
It seems that we all must sleep to mantain normal level of skills. However, it seems that we don't know what is the amount of time that everyone needs to sleep each night. The only certain fact is that no one can live without sleep. So if you are tired but you can choose between seeing a new episode of your favourite TV series and going to sleep, GO TO SLEEP. Your brain will thank you :)
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