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人体的生理正如一个时钟,每日都有一个周期性的规律,例如,人体体温的规律便是早晨起床时体温最低,到了黄昏六点左右体温较高,六点以后又有规律地降低。如血压和心跳次数同样有上述的自然规律。人的自律神经有交感神经及副交感神经两种正相反的神经组织。体温、血压或心跳次数也是受这两组神经组织所调节支配着。一般来说,交感神经是支配精神紧张,调整工作活动的神经,相反,副交感神经是管理休息状态的神经组织,胃肠等内脏也是根据副交感神经的作用而提高各种内脏器官的工作机能。因此可以说日间是交感神经组织的工作时间,夜间则是副交感神经组织的工作时间,这两组神经每日都有规律地支配着人体的各种机能活动。
Human physiology is just like a clock. Every day, there is a regular pattern. For example, the law of human body temperature is the lowest body temperature when getting up in the morning, the body temperature is high at about 6:00 in the evening and regularly decreases after 6:00. Such as the number of blood pressure and heart rate have the same natural law. People’s autonomic nervous sympathetic and parasympathetic nerves are the opposite of the two kinds of nerve tissue. Body temperature, blood pressure or heartbeat frequency is also governed by these two groups of nervous tissues. In general, the sympathetic nerve is the nerve that dominates stress and adjusts work activities. On the contrary, the parasympathetic nerve is a nerve tissue that manages the resting state. The internal organs such as the gastrointestinal tract also improve the working functions of various internal organs according to the parasympathetic nerve function. So we can say that during the day is the working time of sympathetic tissue, the night is the working time of parasympathetic tissue, the two groups of nerves every day are regularly dominated the body’s various functional activities.