1. When does the summer of 2021 start? It starts on May 5, 2021.

According to solar terms, the specific time of summer is: May 5, 2021 to August 6, 2021.

Because the four solar terms of Beginning of Spring, Beginning of Summer, Beginning of Autumn and Beginning of Winter are the dividing lines between spring, summer, autumn and winter, summer is from Beginning of Summer to Beginning of Autumn.

The introduction of summer marks the beginning of summer, and autumn is the sign of bidding farewell to summer and autumn, so summer is from the beginning of summer to autumn.

However, if according to climate standards, the daily average temperature rises above 22℃, it is the beginning of summer.

Before and after the Beginning of Summer, it is true that only south of the Fuzhou to Nanling line is the real summer in China.

The meteorological significance of summer in the north temperate zone is from May 21 (Xiaoman) to August 22 (summer heat treatment); the meteorological significance of summer in the south temperate zone is from November 21 (snowfall in the northern hemisphere) to February 18 of the following year (rainfall in the northern hemisphere).

2. What foods are better to eat in summer? 1. Eat more porridge. Eating more porridge is a traditional health-preserving method in my country, which is good for the stomach.

Porridge products used to prevent heatstroke and cool down include mung bean porridge, lotus leaf porridge, fresh lotus root porridge, raw reed root porridge, etc.

You can also use the traditional Chinese medicine 15 grams of cassia seeds, 15 grams of white chrysanthemum, 60 grams of japonica rice, and an appropriate amount of rock sugar to cook porridge as a refreshing porridge for high temperatures in summer.

In addition, white sweet potato, mustard, etc. are added to japonica rice to make porridge, which has the effects of antipyretic, sweating, and stomach nourishing.

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 have soup is bean soup.

Mung beans are cool in nature and have the effect of clearing away heat and relieving summer heat.

3. Eat sour foods appropriately. Sour foods can not only produce fluids and quench thirst, strengthen the stomach and digest food, but can also kill bacteria and prevent diseases.

Sour food can kill bacteria in vegetables and prevent intestinal infectious diseases.

Sweating in summer makes it easy to lose body fluids. You can eat sour foods. Their sour taste can reduce sweating and stop diarrhea. Especially now that we are entering the rainy season and the climate is humid, eating more sour foods can also dispel dampness.

In addition, acidic foods, especially acidic fruits, are generally alkaline and can replenish a large amount of water lost by the human body in summer, thereby preventing heatstroke and cooling.

Another great advantage of sour food is that it can promote the absorption of nutrients, especially in high temperature environments.

4. Eat more vegetables. The weather is hot and humid. People generally like to eat light, delicious and not greasy food. Green vegetables have this characteristic and are also rich in vitamins and protein.

Therefore, you should try to eat more vegetables, such as beans, melons, cabbage, coriander, fennel, etc., which can not only supplement nutrition, but also clear away heat and relieve summer heat.

For example, cucumber, winter melon, and bitter melon all have good heat-clearing and relieving effects.

3. How to prevent heatstroke and cool down in summer 1. Replenish water in time and drink a small amount of water several times, preferably 100 ml each time.

Cold drinks should not be consumed during or after strenuous exercise.

Make your own water drink: add 4G of salt, 100g of glucose, and 150ml of orange juice to 1000ml of cold boiled water.

This can not only replenish water, but also replenish salt, glucose and vitamins, thus balancing the water and salt metabolism in the body.

2. The room temperature is suitable. The temperature difference between indoor and outdoor air conditioners should not exceed 5 degrees. Even if the weather gets hotter, the indoor temperature of the air conditioner should not be lower than 24 degrees.

Bedrooms should be quiet, clean, airy and cool.

Maintaining adequate sleep can relax the brain and body systems, which is not only beneficial to work and study, but is also an effective measure to prevent heatstroke.

3. Comprehensive, balanced and appropriate nutrition. Urban people eat too much fat and protein, but too little fruits and vegetables.

In order to spend midsummer safely, people should eat more whole grains, cereals, fruits and vegetables as much as possible to reduce cooking oil.

For adults, 50 grams of soy products, 50 grams of aquatic products, and 300 grams of grain per day can already meet the body's daily protein needs.

Eating too much is not good for your health.

4. Don’t drink alcohol. Adding fuel to the fire and damp heat in summer are the main causes of skin ulcers and carbuncles. It is not advisable to drink alcohol.

5. Avoid "rapid cooling" after being heated. In hot summer, when people go out or come back from get off work, they like to either turn on the fan or take a cold shower immediately.

In this way, the pores all over the body close quickly, making it difficult for body heat to escape.

In addition, due to the rapid contraction of cerebral blood vessels, insufficient blood supply to the brain causes dizziness.