What does dog fever mean?
V means to avoid the heat. "Historical Records of Justice" also said: "Evil spirits harm people, so dogs should guard against them." The ancients believed that dogs were righteous animals, and killing dogs and smearing blood on four doors could eliminate heat, poison and evil.
"Fu" means "Fu Xie" in dog days. That is, the so-called "six evils" (referring to "wind, cold, heat, dampness, dryness and fire"). In summer, summer evil will gradually lurk in the depths of the body without being noticed. If summer evil is not removed, fire in autumn will kill gold and hurt lung qi, which will lead to the decline of people's immunity and diseases such as cold, cough and fever. After entering winter, these diseases will recur ... autumn is sarcoidosis, and there are few recipients and serious diseases from winter to Sunday.
Therefore, it is clearly pointed out in the Yellow Emperor's Canon that "if you love outside, you will be angry". Don't hide in an air-conditioned room for fear of sweating. Cold drinks can't dispel summer heat, but will hurt the spleen and stomach. You know, tea is the best drink to relieve summer heat. Although a cup of hot tea will sweat a little, it will be followed by a chill. You can't just look at the present, but look further. Health care must start now.
Three volts of heat.
The dog days are hot, which is a proverb to describe the hottest time of the Lunar New Year. Three volts is the general term for initial, middle and final volts. According to the traditional calculation method in China, the third and fourth Geng days from summer to the future are the start dates of the first (recumbent) and the second (recumbent) respectively, and the first Geng day after beginning of autumn is the first day of the last (recumbent). Why did the "Summer Solstice Day Three Geng" begin to be subdued? According to Li Ji History, "Who are those people who lie down? On the day when the golden gas lurked, it was metabolized at four o'clock, all of which were born together. Beginning of spring wood instead of water, aquatic wood; Long summer fire replaces wood and wood fire; The water in beginning of winter is gold, and gold is raw water. As for beginning of autumn, Jin replaced fire, and Jin was afraid of fire. Therefore, when it comes to Geng Day, it will fall, and it is Geng who is gold. " The Book of Yin and Yang is quoted from the Book of Beginners: "From the summer solstice, the third watch is at the beginning, the fourth watch is at the middle, and beginning of autumn is at the beginning, which is called three volts." According to Ji Qin, "Degong wrote a eulogy at the beginning of the second year, and the cloud of justice: on the third day of June, Qin Gong did it, so the cloud fell first." The word "Fu" originated in the second year of Qin Degong (676 BC). The first, middle and last volts are also called the first, second and third volts, so the third volt is also called the last volt.
The time of accommodation is not fixed every year, and the length of accommodation is also different. You need to check the almanac to calculate it. Simply put, we can use the formula of "Xia San Geng" to express the lodging date, that is, from the third Geng day in Xia Hou, the initial lodging is 10 day, the intermediate lodging is 10 day or 20 days, and the final lodging is 10 day. In ancient China, the "trunk-branch calendar" was popular, and 60 groups of different names were used to record dates with 10 heavenly stems and 12 earthly branches, which were recycled. The day with the word "Geng" is called "Geng Day". The word "Geng" in Geng Day is the seventh word in "A, B, C, D, E, Ji, G, Xin, Ren, Gui" 10 day, and it is repeated every 10 day. Starting from the summer solstice, according to the date of trunk, the third Geng day is the first, the fourth Geng day is the middle, and the 1 th Geng day after beginning of autumn is the last. When there are four Geng days between the summer solstice and the beginning of autumn, the middle part is 10 days, and when there are five Geng days, the middle part is 20 days. It seems that the emergence of Gengri will affect the length of the first half sooner or later, so there will be 30 days in some years and 40 days in some years.
Summer training is dog days.
As the saying goes, "practice three or nine in winter and three volts in summer." This is a summary of the experience of long-term health preservation in ancient times. Modern medicine has proved that in hot weather, a kind of emergency protein will be produced in human body, which can resist the harm to human body in summer. It can be seen that the human body itself has the ability to adapt to different environments. Exercise in cold and summer can improve the body's ability to adapt to different environments. Therefore, the ancients believed that people who obtained health cultivation could "avoid cold and heat, and all kinds of poisons would not invade." However, to prevent heatstroke in summer, we should dialectically avoid the high temperature period. The doctor reminded that ordinary people should not advocate this kind of exercise, especially the elderly and infirm, or those who have lived in a suitable temperature environment for a long time and have low adaptability to different environments. Therefore, these people had better be in summer.
Of course, you can't hide in an air-conditioned home, because that will make your body less adaptable. You should get out of the house properly and do some proper exercise. Such as swimming, playing in Tai Ji Chuan or traveling to summer resorts, will enrich summer life and enhance physical fitness.