First, it preserves the energy. When you are sleeping at night, your body doesn’t move and replace the energy that is used out during the day time by lowering your body temperature. In other words, it is essential for storing up the energy that is also needed for the next day for your activities.

Second, it helps develop the central nerve system. When people are sleeping, the usual cycle is about 90 minutes and it starts from light sleep to deep sleep and then to light sleep again and they start dreaming. This is called REM sleeping and is very effective for helping with the growth for teenagers.

Third, sleeping is plays a very important role for memorizing and studying. When you are asleep, the brain gathers all the new information you acquired throughout the day and organizes them. This process also happens during REM sleep.

In addition to this, when you are sleeping, your nervous system forms the proteins and gets rid of the toxin in the body. There are many more arguments about the sleep but the one definite fact is sleep is a very important process of winding up the day and preparing for tomorrow.