What are the three volts?

Three volts refers to initial, intermediate and final volts.

dog days are the hottest season of the year. The dog days appear in the Gregorian calendar from mid-July to mid-August every year, and its climatic characteristics are high temperature, low air pressure, high humidity and low wind speed. Fu means that Yin qi is forced to hide underground by Yang qi. There are initial, middle and final volts in the three days, and the date is determined by the coordination of the solar terms and the dates of the calendar.

according to the traditional calculation method in China, the third and fourth Geng days after the summer solstice are the starting dates of the first (head) and the middle, respectively, and the first Geng day after beginning of autumn is the first day of the last.

because every Geng day is 1 days apart, the stipulated time for the first and last days is 1 days. And because the third Geng day (first fall) after the summer solstice solar terms appears sooner or later, the number of days in the fall is long or short, which may be 1 days or 2 days.

tips on heatstroke prevention in dog days

1. In summer, strenuous outdoor and daytime activities such as mountain climbing are not recommended, and sports activities such as swimming and jogging in the morning and evening are suggested.

Second, drink plenty of boiled water, and drink regularly. Don't wait until you are thirsty. It is not advisable to binge drink after you are thirsty. Drink less juice, soda and other drinks.

Third, in summer, people have long activities, sweat a lot and consume a lot, so they should eat more nutritious foods such as chicken, duck, lean meat, fish and eggs to meet the needs of human metabolism.

Fourth, seasonal vegetables in summer, such as lettuce, cucumber and tomato, have higher water content; Fresh fruits, such as peaches, apricots, watermelons and melons, have a water content of 8 to 9%, which can be used to replenish water.

refer to Baidu encyclopedia-dog days for the above contents.