From May 5th, 202 1.

According to the solar terms, the specific time in summer is from May 5th, 20021year to August 6th, 20021year. Because beginning of spring, Changchun, beginning of autumn and beginning of winter are the dividing lines of spring, summer, autumn and winter, and summer is from Changchun to beginning of autumn.

The introduction of summer marks the beginning of summer, and autumn marks the farewell of summer and autumn, so summer is from early summer to autumn. However, if the average daily temperature rises above 22℃ according to climate standards, it will be a long summer. Before and after the "Long Summer", it is true that only the south of Fuzhou-Nanling Line is the real summer in China. The meteorological significance of summer in the north temperate zone is from May 2 1 (Xiaoman) to August 22 (summer heat treatment); The meteorological significance of summer in the south temperate zone is1October (snowfall in the northern hemisphere) 165438+2 1 February (rainfall in the northern hemisphere) 18.

Second, what food is better to eat in summer?

1, eat more porridge

Eating more porridge is a traditional health preserving method in China, which is good for the stomach. The porridge products used for heatstroke prevention and cooling include mung bean porridge, lotus leaf porridge, fresh lotus root porridge and raw reed root porridge.

You can also use cassia seed 15g, white chrysanthemum 15g, 60g of japonica rice, and rock sugar to cook porridge as high-temperature cold porridge in summer. In addition, adding sweet potatoes and mustard to boiled porridge in japonica rice has the effects of relieving fever, sweating and nourishing the stomach.

Step 2 drink more soup

When people sweat more and lose more body fluids, drinking more soup can not only replenish water in time, but also help digestion and absorption. The best way to drink soup is bean soup. Mung beans are cool and have the effect of clearing away heat and relieving summer heat.

3. Eat sour food properly

Sour food can not only produce saliva to quench thirst, strengthen stomach and digestion, but also sterilize and prevent diseases. Sour food can kill bacteria in vegetables and prevent intestinal infectious diseases. Sweating in summer is easy to lose body fluid, so you can eat sour food. Their sour taste can stop sweating and diarrhea, especially now that the rainy season is coming and the climate is humid, eating more sour food can also eliminate dampness.

In addition, acidic foods, especially acidic fruits, are generally alkaline, which can supplement a lot of water lost by the human body in summer, thus playing a role in heatstroke prevention and cooling. Another great advantage of sour food is that it can promote the absorption of nutrients, especially in high temperature environment.

Step 4 eat more vegetables

The weather is hot and humid, and people generally like to eat light, delicious and non-greasy food. Vegetables have this characteristic, and they are also rich in vitamins and protein.

So try to eat more vegetables, such as beans, melons, Chinese cabbage, coriander, fennel and so on. It can not only supplement nutrition, but also clear away heat and relieve summer heat. For example, cucumber, wax gourd and bitter gourd all have good effects of clearing away heat and relieving summer heat.

Third, how to prevent heatstroke and cool down in summer

1, replenish water in time

Drink a small amount of water many times, each time 100 ml is appropriate. It is not advisable to drink cold drinks during strenuous exercise or after exercise. Self-made water beverage: Add 4G of salt, 0.00g of glucose and 0.50ml of orange juice to 1000ml of cold boiled water. This can not only supplement water, but also supplement salt, glucose and vitamins, thus balancing the metabolism of water and salt in the body.

2, the room temperature is suitable, clean and ventilated.

The temperature difference between indoor and outdoor air conditioners should not exceed 5 degrees. Even if the weather is hot again, the indoor temperature of the air conditioner should not be lower than 24 degrees. The bedroom should be quiet, clean, ventilated and cool. Keeping enough sleep can relax the brain and body system, which is not only beneficial to work and study, but also an effective measure to prevent heatstroke.

3. Comprehensive, balanced and appropriate nutrition

Urban residents eat too much fat and protein, but seldom eat fruits and vegetables. In order to spend the summer safely, people should eat as much coarse grains, miscellaneous grains, fruits and vegetables as possible and reduce edible oil. Adults can get 50 grams of bean products, 50 grams of aquatic products and 300 grams of grain every day, which can meet the daily needs of protein. Eating too much is not good for your health.

4. Don't drink

Adding oil to the fire in summer and damp heat are the main causes of skin ulcers and carbuncle swelling, so it is not advisable to drink alcohol.

5. Avoid "rapid cooling" after heating.

In hot summer, when people go out or come back from work, they like to either turn on the electric fan or take a cold bath immediately. In this way, the pores of the whole body are quickly closed, and the heat in the body is difficult to dissipate. In addition, due to the rapid contraction of cerebral blood vessels and insufficient blood supply to the brain, people are dizzy.