Often people complain: “I dream every night, and I don’t know whether this is good or not?” In fact, as long as there is sleep, there are dreams, modern brain science and sleep medicine confirmed that whether you feel or not, there are about two hours of dreaming every night, the average will be four or five dreams. Although dreaming is a normal thing, but there are good and bad dreams. The so-called “good dreams” generally refer to the dreams that you may remember when you first wake up, but will forget half an hour later. Such dreams do not affect the quality of sleep. Generally speaking, the content of dreams varies from person to person, some are related to daytime events and some are not related to reality in any way, such as meeting a friend, trying to open a bottle cap, having a conversation with someone or going on a trip. If you have normal dreams, you will not feel tired when you wake up in the morning, and you will be in good spirits and have a clear mind, which is good for your health and is one of the important factors to ensure the normal vitality of your organism. Dreaming is part of sleep, which has the function of repairing brain cells, and dreaming has corresponding effects, such as soothing nerves, promoting the elimination of metabolites in the brain, and enhancing memory functions. During the day, the brain works hard all day, and at night it just repairs itself by sleeping and dreaming. Some physiological studies have found that people who often have “good dreams” live longer on average. There are two kinds of “bad dreams”, one is often referred to as “nightmares”, such as in the dream of danger, being chased, falling from a height, etc., panic, and even shouting in the dream, and nervous dreams repeated several times a night; there is another kind of overnight Dreaming, a whole night seems to sleep non-sleep, wake up in the morning drained, not full of energy, and even have dizziness, headache and other obvious symptoms of discomfort. Generally speaking, nightmares are often related to the person’s mental factors, weakness, tension, stimulation, watching horror movies or news about violence during the day, the night may have related nightmares. Frequent “bad dreams” are a sign of poor sleep quality and need to be treated in a regular hospital. The traditional way of health care in China is to “sleep first, then sleep the eyes”. In order to avoid “nightmare after nightmare”, we have to calm our mind first, and then enter the sleep state. Therefore, it is best to avoid too much excitement after 9 p.m., do not carry out karaoke, socializing, Internet chat, phone calls, planning and other activities that are more active in the cerebral cortex, you can watch TV shows or listen to soothing music, and go to bed at 11 p.m.; do not eat too much dinner, seventy to eighty percent full, should be light, eat less potatoes, onions and other gas-generating food, do not eat too much high-fat, high-protein and other foods that will produce Do not eat too much high fat, high protein and other foods that produce acidic substances, so as not to affect the quality of sleep; the best choice of light, breathable, good warmth of the quilt; sleep best on the right side, supine, sleep on the stomach is easy to dream.