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How many days in dog days in 2020: **40 days.

The first day of 2020 is 10 day: July 2020 is16-July 25, 2020.

20 days in the middle of 2020: July 26, 2020-August 2020 14.

End of 2020 10 day: August 2020 15-August 24, 2020.

When will it go to heaven in 2020? July 16.

An ambush is entering the dog days. "On the summer solstice, the head of the three gengzi falls", which is the basis for establishing the first autumn. The almanac stipulates that "the number of volts starts from the third day of summer", that is to say, "it starts to count down from summer" and begins to fall on the third "Geng Day". The "Geng Day" here refers to the days prefixed with "Geng" in the ancient "Ganzhi Jiri Law".

The date of Geng Day is changeable, not fixed, so the accommodation date is different every year, but the accommodation date is always between July 1 1 and July 20. The fourth to fifth Geng Day is moderate, and the first to second Geng Day after beginning of autumn is the end. Every Geng day is 65,438+00 days apart, and the number of mid-festival days is not fixed. There are four Geng days from summer solstice to autumn, with 65,438+00 days in the middle, five Geng days and 20 days in the middle.

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How to prevent heatstroke and cool down after sleeping?

1, you should not binge drink when you are thirsty.

After sweating a lot in labor and exercise, it is not advisable to drink a lot of white water, and some light salt (sugar) water should be added appropriately, because too much salt is lost in the body after sweating a lot. If salt is not supplemented in time, the ratio of water to salt in the body will be seriously unbalanced, leading to metabolic disorder.

2, it is not appropriate to drink too much.

In summer, human body is easily affected by temperature, and excessive damp heat is the cause of skin sores, carbuncle and toxic swelling. If you drink a lot of white wine, it will contribute to dryness and dampness, which is tantamount to adding fuel to the fire.

3, standing heatstroke drugs

Summer heat, high temperature and dryness often make people eat tasteless, sleep badly, and are prone to dizziness, headache, fatigue and even nausea and vomiting. In order to spend the summer safely, families should prepare some heatstroke prevention drugs. Common medicines and foods are: ten drops of water, Huoxiang Zhengqi water, cool oil, honeysuckle, chrysanthemum, lotus leaf and watermelon.

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4. Learn to have a good sleep

In summer, the days are long and the nights are short, the weather is sultry, the sleep time is short, and the sleep quality is poor. If you can take a nap in the afternoon, it is just like charging your brain, which is beneficial to your body's recovery.

Step 5 Exercise moderately

"Life lies in exercise", but those who are old and weak and usually lack exercise should never exercise vigorously, otherwise it will be harmful and useless.

6. Hot tea is better than cold drink.

For heatstroke prevention and cooling, hot tea is better than cold drink and lasts longer. Tea is rich in potassium. Increased sweating in summer often leads to excessive loss of potassium ions. Potassium and sodium maintain normal osmotic pressure and acid-base balance inside and outside cells, which has an important influence on nerve and muscle function, especially the normal movement of myocardium. When potassium is insufficient in the body, people often feel tired and weak, lose appetite, reduce heat resistance, and even lead to heatstroke. Drinking tea every day in summer can supplement potassium, improve heat resistance and effectively prevent heatstroke.