Scientists discovered recently that sleeping increases one type of brain cell called “myelin”; which is responsible to protect brain circuits. Experiment shows that the largest rate of cell increase came during periods of sleep accompanied by dreams or what is scientifically known as sleep fast eyeball movement.
The reason why we need to sleep has puzzled scientists for centuries. Clearly, the need for sleep comes from the sense of needing to rest, which will help the mind to work well. But the biological processes that take place during sleep have not been revealed until recently.
For a long period of time, researchers have been focusing on how neuronal activity changes between being awake and being asleep. But now how the cells of the nervous system work and change is determined by the periods of sleep.
The researchers say their findings suggest that sleep loss may exacerbate some symptoms of multiple sclerosis, which causes myelin to be damaged. In the case of multiple sclerosis, the body's immune system attacks the myelin, which covers the nerve cells and spinal cord cells.
According to the National Institute of Neurological Disorders and Stroke, it was found that sleep is necessary for our neurons to work well. It is also known that during deep sleep the hormone responsible for growth in children and young people is released.