Does the human body have a fatigue period?

Yes. At the beginning of the 20th century, the German doctor Ferris and the Austrian psychologist Swartberg found a strange phenomenon at the same time: there are some patients who need treatment every 23 or 28 days because of headaches, mental fatigue, and so on. They called the 23-day period the "Law of Physical Strength" and the 28-day period the "Law of Emotions". 20 years later, Tritscher discovered that students' intelligence varied in 33-day cycles, which he called the "Law of Intelligence". Law of Intelligence". Later, the Law of Physical Strength, the Law of Intelligence, and the Law of Emotions were collectively known as the biological triple rhythm. In 1937. The first international conference on biological rhythms was held. In 1960, the United States held an international conference dedicated to the discussion of biological rhythms, biological rhythms for a new discipline formally came into being. 1981, "Science Illustrated" magazine published the "unraveling the secrets of biological rhythms" article (February 1981 issue), will be introduced to the domestic readers of the wonderful biological rhythms, aroused a great deal of interest. Afterwards, many places and departments in China also carried out applied research on biological rhythms, and the relevant state departments issued documents affirming the role of biological rhythms in promoting safe production. The three biological rhythms generally remain unchanged throughout a person's life and are not subject to any acquired influences. Each of the three rhythms has its own high tide, low tide and critical days. The cyclical changes in a person's physical, emotional and intellectual abilities can all be represented by curves. All three curves are calculated from the day of birth, starting at the midline, moving into the climax period, then experiencing the critical period, and then shifting to the low period, and so on and so forth. The day when the curve is above the center line is the high period, on the contrary, the day below the center line is the low period (the number of days between the high period and the low period is equal), and the day that intersects with the center line (strictly speaking, including 1 day before and after it) is the critical period. In the physical climax, people's energy, physical strength, while in the low tide, fatigue, lethargy; in the emotional climax, people's mood, high emotions, all activities are covered by a happy state of mind. In the low tide period, the mood is dull, depressed and unresponsive, and all activities are overshadowed by a depressed state of mind; in the intellectual high tide period, the human mind is sensitive and has a strong memory, while in the low tide period, it is slow and forgetful, and has poor comprehension. In the critical period of biological rhythms, the body is in an unstable transition state, feeling particularly bad about oneself, declining health, irritable, easily and inexplicably angry; at this time, one's relevant abilities and body coordination are poor, things are prone to error, the body is prone to disease, and accidents are likely to occur in the activities. The three rhythmic cycles are different, but sometimes they overlap on one day, i.e., double or triple critical day. The overlap of critical days increases the likelihood of accidents, so internationally they are known as a person's "danger day" for double critical days and triple critical days. According to the results of a statistical analysis of 1,000 car accidents by the Swedish scholar Schwein, the number of accidents that occurred during the critical period of the perpetrator's biorhythm was 11 times higher than during the non-critical period. The former Federal Republic of Germany Ministry of Agricultural Machinery of 497 accidents statistical analysis found that occurred in the perpetrator of the critical period of biological rhythms accounted for 97.8%. China's Handan Iron and Steel Plant in 1973 to 1986 in the 13 years of the 174 accidents analyzed statistics, the results show that: 66% occurred in the parties involved in the critical period of the biological rhythms. Shanghai Ferroalloy Factory's Safety Technology Section analyzed the statistics of 105 industrial accidents, which showed that 63.8% of the accidents were in the critical period and low tide of their biological rhythms. As we all know, human is the most active factor in productivity, to realize safe production can't only pay attention to equipment but not people, moreover, can't only emphasize on improving the political quality and business quality of the workers, but neglect the physical and mental state of the workers. Safe production is about science, and the understanding of science is not only limited to scientific rules and regulations and scientific management methods, which should also include the scientific understanding of laborers and the scientific arrangement of work tasks and working hours. If every laborer knows his or her biological trimester and arranges production scientifically, the total number of accidents can definitely be reduced to a minimum. Safety is the eternal theme of coal mine production. Although each mine takes many measures to take precautions, accidents may occur at any time. Statistics have found that ignoring the biological trichotomy is an important reason why the total number of accidents in coal mines remains high. Therefore, in order to promote the sustained, stable and healthy development of coal mine safety, strengthen the management and behavioral control of people in the process of safety production, consolidate the foundation of safety management, achieve scientific management, innovative means, and advance prevention, it is of great significance to apply the human biorhythm fingerprint identification safety management system to the coal mine safety production. Jinan Zhengping Automatic Equipment Co., Ltd. has developed the Human Biorhythm Fingerprint Identification Safety Management System by combining human fingerprint identification, human biorhythm and safety management organically. Human biorhythm fingerprint identification safety management system is based on the employee's birth year, month and day and fingerprint identification for a comprehensive analysis of the physical strength of people in different periods of time, intelligence, emotions, three aspects of the results of the change, analyze these factors affecting the safety of production, so as to formulate precautionary measures and the implementation of the implementation of a safety and security management tools. Human Biorhythm Criticality and Corresponding Safety Measures A. Physical Criticality: When there is a critical period of physical strength, the body is in a slightly weaker period than usual, i.e. relative fatigue, and should be adjusted and rested in time. B. Intellectual Criticality: When there is a period of intellectual criticality, the intellect is less responsive than usual, and one should always pay attention to the precautions in the production process in order to prevent accidents. C. Emotional criticality: When the period of emotional criticality occurs, the emotion is in fluctuation than usual, and then the emotion and mind should be adjusted in time so as to avoid the emotion and mind from generating bad behaviors affecting the safety production. D. Physical and intellectual double criticality: When physical and intellectual double criticality occurs, there will be physical weakness and slow intellectual response, which should be adjusted and rested in time and work should be arranged appropriately. E. Physical and Emotional Dual Criticality: When physical and emotional dual criticality occurs, there is a tendency for physical weakness and emotional abnormality. Attention should be paid to rest and emotional control, off-duty arrangements should be made, and good help and education should be provided. F. Emotional and intellectual double criticality: when emotional and intellectual double criticality occurs, it is easy to have emotional fluctuation and slow intellectual response, should adjust the emotion and mentality, do a good job to help and promote the work, and should not go down the well. G. Physical, intellectual, and emotional triple criticality: when physical, intellectual, and emotional triple criticality occurs, one is prone to physical discomfort, slow intellectual response, and perverse emotional fluctuations; one should do a good job of helping and educating, focusing on management, and should not go down to the wells, and the district team should adjust the off-duty period. Practice has proved that the implementation of human biological rhythm control, can be effective in the implementation of human unsafe behavior ahead of the control, to avoid some adverse consequences. In the process of applying human biorhythm fingerprinting safety management system, we should pay attention to comprehensive analysis, timely reminder, eliminate paralysis and don't care about the idea, and persistently grasp it, which can become a good auxiliary means of coal mine safety production management, and produce a certain positive effect, so as to make the safety production management more than one gateway. Each kind of biological life activities, habits have certain periodic changes, biological inner rhythm often corresponds to the environmental cycle changes, almost all occur in a fixed period of time, showing the same kind of cyclical life rhythms, regulating the biological behavior and physiological changes. Such as migratory birds in the spring and fall seasons of migration, North and South Polar animals according to the seasonal change of hair, butterflies mostly in the daytime activities, moths in the night activities, roosters crow early in the morning, owls in the bushes during the day to rest, bats to the dusk to fly out to catch insects, petunias bulging couch in full bloom, the fragrance of the night flowers in the evening, the midday flowers to meet the blazing sun blossomed to be the phenomenon of the changes in the rhythm of all. Biorhythms are organisms in the long course of evolution, in the body of the formation of a kind of clock-like institutions, it can be with the change of time, regulate its own physiological activities, so that in a certain period of time to start, carry out and end. The reason for the generation of biological rhythms is a complex physiological process, which is the result of chemical and physical changes in the organism. It is analyzed that there may be many factors that help the organism to be more positive in time, temperature, light, chemical activity of enzymes, regulation of the nervous system, hormones and so on are related to it. According to the same biological dosage, patients take it at different times, the efficacy is not the same. Chronobiology is being emphasized in medical treatment, according to the body's internal rhythms, the development of the best system of rest and relaxation, can play a role in improving work efficiency, to prevent the efficacy of disease and accidents