1. The so-called life activities refer to the free and self-conscious activities based on the survival activities and beyond the means of livelihood noumenon Sex creation activity, a kind of "eternal" pursuit of self realization and self-development -- seeking beauty and beauty taste Le Sheng Yingyao and its inevitable result. 2. Here, "people" should include all people, and "life activities" should refer to all activities that people can carry out, as well as the feelings, experiences and objective meanings generated in these activities
vital activity; vital movement
Traditional Chinese medicine believes that life is the gasification movement of biological forms, and the essence of gasification movement is to transform qi and form. The unity of opposites between transforming qi and forming is the most fundamental and special contradiction in the process of life. This is the essence that distinguishes life from non life. On this point, the Yellow Emperor's Canon of Internal Medicine clearly points out that:“ Cation forming 。” That is to say, Yang is the process of transforming qi, that is, transforming the form and quality of the body into invisible qi (subtle matter that is difficult to be recognized by the naked eye), which is regarded as a functional activity. Yin is a process of forming, that is, combining external substances into its own form. The transformation of qi and the formation always go together. However, under normal life conditions, it is called "opposites and complements" to maintain its dynamic balance, act as a prerequisite for each other and transform each other. The process of life is the process of constant transformation and formation of qi, that is, the process of constant material exchange and energy exchange between the organism and the outside world. The process of transformation of qi is the process of alienation or catabolism, including the decomposition of tissue components in the body and the decomposition of energy reserves, to provide the needs of assimilation and other life activities of the organism. Forming process, that is, assimilation or anabolism, that is, the absorption of external substances to form their own tissues and energy reserves. Because matter and energy are closely linked, life matter contains certain chemical energy, so material exchange means energy exchange. The essence of metabolism is material metabolism and energy metabolism with the surrounding environment. As Engels said: "The metabolism of organisms is the most general and significant phenomenon of life." It can be seen that metabolism is the most significant feature of life, and any living individual has this basic feature. If the metabolic process of the human body gradually weakens, people will begin to age; Once stopped, life will inevitably end. from Unicellular organism To the life of higher animals and plants. The second characteristic is irritability
Stress refers to the ability of life to respond to external and internal stimuli, such as cold and hot stimulus, pupillary light reflex, vomiting reflex, defecation response, etc.
The third feature is growth, development and reproduction
Any living body experiences the process from birth to growth and development. The so-called growth means that on the basis of metabolism, when assimilation exceed Alienation The weight and volume of the organism will increase accordingly. So called development, right Sexual reproduction From the beginning of the fertilized egg, through the embryonic stage, infancy, adulthood, old age, until death. The fourth feature is inheritance And variation As a result of reproduction, the species of living things can continue; The result of heredity is the basis for organisms to maintain their stability. Both are one of the remarkable characteristics of all life forms.
The fifth feature has a common material basis and structural basis
The sixth one is adaptability Organisms can adapt to certain environment.
Acellular organism—— Viruses Its life activities cannot be separated from living cells host cell It has no vitality when it exists alone. 
