Injury 1: decreased immunity

If you often stay up late, feel tired and depressed, your immunity will decline, and symptoms of autonomic nervous disorders such as colds, gastrointestinal infections and allergies will come to you unexpectedly. Moreover, the direct symptoms caused by staying up late often are dizziness, inability to concentrate and even migraine when going to work the next day.

Injury 2: Gastrointestinal crisis

People who stay up late and work overtime tend to feel tired. Eating "midnight snack" is a great source of vitality for people who stay up late, but it may trigger a crisis in the stomach after "midnight snack", but it is also worrying because the life span of human gastric mucosal epithelial cells is very short, and it will be updated and regenerated every 2 ~ 3 days on average. This process is usually carried out during gastrointestinal rest at night. If you often eat at night, the gastrointestinal tract will not get the necessary rest, and the repair of gastric mucosa will not be carried out smoothly. Moreover, when you sleep at night, the supper you eat stays in your stomach for a long time, which can promote the secretion of gastric juice and stimulate the gastric mucosa. Over time, it is easy to cause gastric mucosal erosion and ulcer.

Injury 3: Heart disease risk

Research shows that people with disordered work and rest are not as easy to adjust their bodies as most people think. Not only will their temper become bad, but they will also have a higher chance of getting heart disease. Because the body's biological clock is not affected by lights and clocks. In particular, organs such as the heart will not be adjusted to stay up late because of rest during the day. Therefore, if black and white are reversed for a long time, people will increase the risk of heart disease.

Injury 4: Obesity

Eating after 9 pm is generally called "midnight snack". There are two kinds of autonomic nerves in human body: sympathetic nerve and parasympathetic nerve. Sympathetic nerve makes digestive organs operate frequently during the day when the body is active, promoting digestion and absorption; At night, the parasympathetic nerve is active, so that the ingested nutrients can be stored in the body when the body is at rest. Eating at night will not only make it difficult to sleep, but also make people lose their appetite the next morning, leading to unbalanced nutrition and obesity.

Injury 5: Refreshing is frustrating.

Speaking of working overtime and staying up late, do you think of a cup of coffee or strong tea to refresh yourself first? Caffeine is really exciting, but caffeine is not effective in improving work efficiency. Even if it is useful, it can only last for a short time. Many people don't sleep when they should sleep, but rely on coffee or tea to refresh themselves. But at night, the human parasympathetic nerve is active, which slows down the heart rate and gastrointestinal peristalsis. Drinking coffee and tea will stimulate sympathetic nerves and easily cause autonomic nervous disorder of internal organs. Although caffeine is refreshing, it will consume B vitamins related to nerve and muscle coordination in the body. People who lack B vitamins are more prone to fatigue, more likely to form a vicious circle, and form the habit of loving tea and coffee, and the more they need it, the worse the effect will be.