The basic principle of health preservation is to have moderation in food and drink, and regular living. Reasonable diet, regular sleep schedule, and avoiding unhealthy habits such as staying up late and overwork are all important factors in maintaining good physical health. At the same time, "not overwork" also emphasizes the importance of avoiding excessive sexual activity, maintaining moderate and restrained sexual life, in order to promote physical health.

By following the above principles, people can enjoy their remaining years and live until the age of one hundred before leaving this world. This is precisely the embodiment of the concept of the unity of heaven and man in health preservation advocated in the Yellow Emperor's Inner Canon, and it is also the health goal that modern people should pursue.
“食饮有节，起居有常”也是养生的基本原则。合理饮食，按时作息，避免熬夜、过度劳累等不良生活习惯，这些都是维持身体健康的重要因素。同时，“不妄作劳”也强调了避免过度房事的重要性，保持适度、有节制的性生活，以利于身体的健康。

通过遵循以上原则，人们可以颐养天年，活到一百岁才离开人世。这正是《黄帝内经》中所倡导的天人合一养生观念的体现，也是我们现代人应该追求的健康目标。

The Yellow Emperor's Inner Canon believes that in order to maintain physical health, it is necessary to first maintain mental health. To achieve this, one must be proficient in the art of health preservation and follow certain health laws in order to eliminate thousands of disasters, cure all illnesses, seek health and longevity, and enjoy the good years. It can be considered that one of the key points emphasized in the Yellow Emperor's Inner Canon for maintaining human life and health is "quietness and nourishing the spirit". For example, in the Su Wen Bi Lun, it is said: "Tranquility leads to the storage of the spirit, while restlessness leads to extinction"; The "Su Wen · Zhi Zhen Yao Da Lun" points out: "Tranquility leads to biochemical treatment, while movement leads to severe illness; And the "Su Wen · Qi Qi Tong Tian Lun" further points out: "Tranquility leads to the closure of the flesh pores, although there may be strong winds and harsh toxins, do not harm them." It can be seen that to maintain physical health, one must first maintain mental health, and the best way to maintain mental health is to "quiet" and nourish the mind, so as to prevent external temptations and stabilize the heart, thereby enhancing the normal physiological functions and disease resistance of the organism, and reducing the risk of illness.
《黄帝内经》认为要保持身体健康，必须先保持心理健康，而要做到这点，就必须精于摄生之道，遵循一定的养生法则，才能千灾消，百病痊，以求健康长寿，享乐天年。可以认为《黄帝内经》 强调要做保持人体生命健康的一个要点就是“清静养神”，如《素问·痹论》说：“静则神藏，躁则消亡”；《素问·至真要大论》指出：“清静则生化治，动则苛 疾起”；而《素问·生气通天论》进一步指出：“清静则肉腠闭拒，虽有大风苛毒，勿之能害。”可见，要保持身体健康，必先保持心理健康，而要保持心理健康， 最好的办法就是“清静”养神，使外诱不入，内心安定，从而使有机体的生理功能正常抗病力增强，不易罹疾生病。

The ancient Yellow Emperor's Inner Canon noted the role of the liver in gynecology. It is mentioned that in a woman's life, there is excess of qi but not enough of blood, and the number of blood is taken away. This sentence reveals the relationship between the physiological characteristics of women and the liver, that is, the pathological characteristics of women are mainly emotional and blood diseases, and these two are particularly closely related to the liver. The two basic functions of the liver - the main storage of blood and the main drainage - are crucial for women's physiological processes such as menstruation, childbirth, and lactation. The liver has the function of regulating and releasing blood, as well as regulating emotions. Women's emotions are prone to fluctuations, and if the liver's blood storage and release functions are normal, their emotions are easy to maintain smoothness and calmness, avoiding anger or excessive depression.
古老的《黄帝内经》就注意到了肝在妇科中的作用。提到：“妇人之生，有余于气，不足于血，以其数脱血也。”这句话揭示了女子生理特点与肝的关系，即女子病理特点主要为情志病和血病，而这两者与肝的关系尤为密切。肝的两个基本功能——主藏血和主疏泄，对于女子的经孕产乳等生理过程至关重要。肝主疏泄还有调畅情志的作用，女性情绪易波动，肝的藏血和疏泄功能正常，则情绪易于保持畅达平和，避免暴怒或过度抑郁。

What is disease-free? According to the common understanding of modern people, the future is uncertain, and of course, future diseases are also uncertain. They are diseases that may or may not exist in the future, with a dual ambiguity. From the essence of the Inner Canon, the term 'wei' here is definite and carries a singular inevitability. 'Wei' is the 'Wei' after the Earth branch's' noon ', representing time. With the rotation and revolution of the Earth, it is the moment when the sun's rays at noon will inevitably come and shine, representing the future, opposite to' already '.
什么是未病？按照现代人惯有的理解，未来是不确定的，未来的病当然也是不确定的，是以后“可能有”也“可能不会有”的病，存在着双重的模糊性。从《内经》的本旨来解，这里的“未”是确定的，带有单一的必然性。“未”是地支“午”后之“未”，代表时间，随着地球的自转与公转，是正午的太阳光线必然要光临照射的时刻，代表未来，与“已”相对。

In the field of disease prevention, the concept of "treating diseases before they occur" in traditional Chinese medicine is receiving increasing attention from the whole society. It cannot be denied that "treating diseases before they occur" is the essence of ancient Chinese medicine. The phrase "if a sage does not treat a disease before it occurs, treating it before it occurs" repeatedly appears in many chapters of the Yellow Emperor's Inner Canon, which is the most explicit evidence.
在疾病预防领域，中医“治未病”的观念越来越多的受到全社会的关注。不可否认，“治未病”确为上古中医的精髓，“圣人不治已病，治未病”，类似的句子在《黄帝内经》的不少篇章中反复出现便是最显性的佐证。