As China entered the class society more than 4,000 years ago, the ruling class began to look forward to life after occupying most of the social resources at that time, thus promoting the development of health knowledge. The medical books of the Zhou Dynasty have clarified that nutrition and rest determine life span. The above proverb is a summary of ancient people's sleep knowledge.
The so-called "people sleep three times" refers to three bad ways of sleeping. The first is lying down. The typical case of this kind of sleep-in is that you don't get up after three o'clock in the morning, and what's more, you are groggy from morning to afternoon. In the history of China, Yelujing, the emperor of Liao Dynasty, was called the "sleeping king". His life is characterized by sleeping after eating and eating after sleeping. Later, Yelujing died in rebellion. However, according to Yelujing's routine, Yelujing would not live long even if no one rebelled against him. The second is "stuffy sleep", that is, cover your head with a quilt and sleep in a ball. There is no denying that this kind of sleep is really comfortable, and many people like this kind of sleep mode, but this kind of sleep mode is not advocated by the ancients. The last kind of sleep is reversed in the morning and evening-for example, sleeping at home during the day and going out for activities at night. Nowadays, many young people have this habit-for example, going to a disco until after midnight and then waking up the next afternoon.
Besides, "life is thinner than paper" refers to the specific harm of the three bad sleep styles mentioned above: endangering life and health. If you often sleep late, it will bring many health risks. For example, biology pays attention to waste and reuse, and does not exercise all the year round, which will lead to the degradation of related sports organs. Moreover, sleeping late for a long time will inevitably take up the time of exercise, and the body's neglect of exercise all the year round will inevitably lead to the decline of immunity, thus losing the ability to prevent diseases, and eventually getting sick all the year round, forming a vicious circle.
And sleepy means that you can only breathe the air in the quilt. If you sleep for a long time, it will inevitably lead to respiratory diseases due to long-term breathing of stale air. In the short term, sultry sleep will cause people to inhale a lot of carbon dioxide, which will damage the heart and brain function. In the long run, it will also lead to respiratory diseases. The disease will not break out easily, but once it breaks out, it may cost a lot of money to treat it. The mode of hanging upside down in the morning and evening will cause organs to be in a dormant state when they are working, but they are forced to be in a working state when they are asleep, which will lead to confusion of physiological functions and even endocrine, which is harmful to health-this is also one of the reasons for the so-called "staying up late and getting old quickly".
Young people don't pay attention to physical maintenance when they are young. When there are problems with their health, they will consider remedial measures. I'm afraid it is too late. So young people should form the good habit of "three sleepless nights" from now on.