Why should we drink more water when the weather is hot?

1. Supplementing essential water for human body. Second, it is conducive to diluting blood. Third, it is beneficial to metabolism. Fourth, it has a good effect on moisturizing and nourishing the skin. Fifth, you can relax your bowels. Sixth, easy digestion of food. Seven, you won't get all kinds of stones, and water is the scavenger that stretches into the body. Eight, can prevent dry eyes and avoid rapid decline in vision. Drinking more water has many benefits, especially getting up early in the morning and drinking a glass of water half an hour before going to bed, which benefits you endlessly every day all the year round! How much water to drink depends on the color of urine. Many people's understanding of drinking water is limited to quenching thirst. In fact, drinking water is also a science, and drinking water correctly is very important for health. Water is the source of life, and all human life activities are inseparable from water. For the human body, water is not only the carrier of "transporting" various nutrients in the body, but also directly participates in the metabolism of the human body. Therefore, it is very important to ensure adequate water intake for the normal operation of human physiological functions. However, many people's understanding of drinking water is limited to quenching thirst. In fact, drinking water is also a science, and drinking water correctly is very important for maintaining people's health. The amount of water you drink varies from person to person. Dr. Yong Cheng, chief of nephrology department of Shenzhen Second People's Hospital, told reporters that generally speaking, the amount of water you drink every day should at least be balanced with the water consumption in your body. The amount of urine discharged by the human body in one day is about 1,5 ml, plus the water evaporated from feces, breathing or skin, the total water consumption is about 2,5 ml, while the water that the human body can replenish from food and metabolism in the body is only about 1, ml every day, so normal people need to drink at least 1,5 ml of water every day, about 8 cups. Usually, how much water everyone needs to drink varies according to the amount of activity, the environment and even the weather. Normal people drinking too much water will not have much impact on their health, but may cause an increase in urination and inconvenience in life. However, for some special people, we must pay special attention to the amount of water to drink. For example, patients with edema, heart failure and renal failure should not drink too much water, because drinking too much water will increase the burden on the heart and kidneys and easily lead to aggravation of the disease. For patients with diseases such as heatstroke, cystitis, constipation and dry skin, drinking more water can play a certain role in relieving the disease. In addition, people should also drink plenty of water when they have a cold and fever, because rising body temperature will cause water loss, and drinking plenty of water can promote the body to dissipate heat and help patients recover. And pregnant women and people who exercise a lot consume much water and should drink more water. Warm boiled water is the best drink. Experts say that from a health point of view, boiled water is the best drink. It contains no calories and can be directly absorbed and utilized by the human body without digestion. It is generally recommended to drink warm boiled water below 3 degrees Celsius, which will not stimulate the peristalsis of the gastrointestinal tract too much and will not easily cause vasoconstriction. Sugary drinks will slow down the absorption rate of water in the gastrointestinal tract, and drinking a lot of sugary drinks for a long time will have a certain adverse effect on human metabolism. Dr. He told reporters that although sugary drinks such as orange juice and cola taste good, they should not be drunk more. The daily intake should be controlled at about one cup, and the maximum intake should not exceed 2 ml. For diabetics and obese people, it is best not to drink such drinks. Bottled water, such as pure water and mineral water, is favored by modern people because it is convenient to drink, but Dr. He reminded that when drinking these waters, it is necessary to ensure their sanitary conditions, and it is best to drink a bucket of water within one month, and people should not take pure water as the main drinking water. Because water is one of the six nutrients in human body, it contains many minerals and trace elements beneficial to human body, but the content of these substances in pure water is greatly reduced. If the nutritional structure of people's diet is unbalanced at ordinary times, it will easily lead to nutritional imbalance. Some people are worried that the hardness of tap water is not good for health, but Dr. He said that the hardness of water basically has no effect on human health, and now tap water in China meets the standard of drinking water, so it is safe to drink boiled tap water. Tea and coffee have refreshing effects, but Dr. He reminds people that it is advisable to drink light tea when drinking tea, and avoid drinking coffee. Caffeine will affect the absorption of calcium. Don't gulp down when drinking water. Many people often think of drinking water when they are thirsty, and they often gulp down. This is also wrong. Drinking water too fast and too fast will inevitably swallow a lot of air together, which is easy to cause hiccups or bloating. Therefore, it is best to put water in your mouth first, and then drink it slowly, especially for people with weak stomach and intestines. As for the drinking time, experts told reporters that drinking water should not be thirsty before drinking. You should drink water in moderation during two meals, and it is best to have a drink every hour. People can also judge whether they need to drink water according to the color of their urine. Generally speaking, people's urine is light yellow. If the color is too light, it may be that they drink too much water. If the color is too dark, it means that they need to replenish more water. Drinking less before going to bed and drinking more after going to bed is also the principle of drinking water correctly, because drinking too much water before going to bed will cause eyelid edema, and you will always run to the toilet in the middle of the night, which will make the quality of sleep not high. After a night's sleep, the water lost by the human body is about 45 ml, which needs to be replenished in time in the morning. Therefore, drinking a glass of water on an empty stomach after getting up in the morning is beneficial to blood circulation, and can also promote the brain to be awake and make the thinking of this day clear and agile.