In fact, when people sleep, other functions of the body will go into a state of rest, and even cells will slowly reduce their reactions. However, even if people rest, there is still no further deep rest. As long as the external environment has a little stimulation, they will start to move immediately, and it is precisely because of this that people will dream.
If a nerve-stimulating event happens in a day, it will always come to mind until the human body begins to rest. Then when most cells of the body start to rest, some cells will still feel the stimulation brought by the daytime events, so people will dream at this time, and this dream is very familiar with the daytime events. This is what people often say: thinking day and night.
Some scholars have found through theory and related experiments that nightmares are a type of dreams, and there are two main reasons for their formation:
The first is that nightmares can show human diseases through dreams. Usually, even before some diseases are born, some unknown symptoms will appear in the body, but these symptoms are not obvious because the diseases have not developed during this period.
However, when the human body enters a rest state at night, most cells in the body will enter a rest state. At this time, if the cells from the disease are active, it is easier to stimulate some unstable cells in the cerebral cortex. At this time, it will show that the human body has begun to get sick through nightmares.
The second point is that the human body is stimulated by the external environment or from the inside of the body during the day. In the dream, a woman can often feel a big wave hitting her, washing her body into the sea, and no one comes to save herself. Through some surveys, the researchers found that the woman was under great pressure in her daily work and life, which made her nervous, but for various reasons, she was unwilling to talk to others or offer help. In this case, only by releasing her predicament and pressure can she stop having similar nightmares.