In fact, the main reason is that these people live irregular lives, are overloaded with work, and overthink their brains, which leads to liver failure. The human body changes from winter cold to spring warmth, from "winter storage" to "spring growth", and the movement of qi and blood is biased to the outside. If the "way to nourish storage" in winter is not done well, "there will be fewer people serving life", and there will be It causes relative ischemia of the heart and brain, making people sleepy. The liver is responsible for storing blood. If you nourish your liver well, you can tolerate fatigue and you will not be prone to sleepiness in spring.
Most people will have red eyes after staying up late, which is a symptom of rising liver fire. If this happens for a long time, it will definitely damage the liver. "The Yellow Emperor's Internal Classic" says: "When a person is lying down, blood returns to the liver." Modern medical research has also confirmed that the blood flow into the liver during sleep is seven times greater than when standing. The increase in blood flow through the liver is conducive to increasing the function of liver cells, improving detoxification capabilities, and accelerating the metabolism of nutrients such as proteins, amino acids, sugars, fats, and vitamins, thereby maintaining the stability of the body's internal environment and resisting various infections in spring. Invasion of disease. Therefore, getting enough sleep and staying up less late in spring is the way to nourish the liver.