1, drink more cold water
For human health, the best drink is cold boiled water. The so-called cold boiled water means pouring boiled water into a teacup, covering the teacup, and cooling it to 20℃-25℃ to become a cup of cold boiled water.
It is found that after natural cooling of boiled water, the chlorine in water is reduced by 50% compared with ordinary natural water, the molecular structure of water will change, and the physical and chemical properties of water such as surface tension, density and conductivity will change, and its biological activity is 4? 5 times, very similar to the water in living cells, so it is easy to penetrate the cell membrane and be absorbed by the human body, promote metabolism, increase the hemoglobin content in blood and improve immune function.
American scholars also found that people who often drink cold water have higher lactate dehydrogenase activity in their bodies and sufficient lactate metabolism in muscle tissues, so they are not easy to feel tired.
In recent years, Russian scholars confirmed in a research report that if you can drink cold boiled water regularly, you can also prevent colds, pharyngitis and some skin diseases. Dr. Linderspoling, who won the Nobel Prize in Medicine twice, put forward "Drink more cold water every day" in the book How to Live a Good Life.
Drinking on an empty stomach
If the weather is hot or you sweat too much after exercise, you need to replenish water as soon as possible. It is best to drink a small amount of water several times an hour before meals. Because the water drunk on an empty stomach only stays in the stomach for a few minutes, it quickly enters the small intestine, is absorbed into the blood, and can be supplemented to the tissues and cells of the whole body in an hour or so.
Because of the balance of water in the body, it can ensure that enough digestive juice is secreted when eating, stimulate appetite and help digestion. If you add a lot of water when eating, soaking rice in soup or water will inevitably affect the secretion of digestive juice, leading to gastrointestinal disharmony and indigestion.
Some scholars especially advocate drinking water on an empty stomach after getting up in the morning. They believe that when people sleep, although the body is in a relatively static state and there is no obvious perspiration, they still lose a lot of water through breathing, urine secretion and perspiration on the body surface. Although there is no thirst after getting up, due to the relative lack of water in the body, the blood concentration will increase and the blood vessel wall will contract.
Drinking a glass of water can dilute viscous blood, dilate blood vessels, promote blood circulation, help lower blood pressure and prevent cerebral hemorrhage and myocardial infarction. Especially in middle-aged and elderly people, cardiovascular diseases began to increase. A glass of water in the morning is far better than taking medicine. As for teenagers, they are in a period of vigorous metabolism. After a night's sleep, a lot of metabolites need to be excreted in the body.
A cup of cold boiled water stimulates gastrointestinal tract contraction. Keeping the gastrointestinal tract clean through the washing action of drinking water is of great help to the digestion and absorption of food. If you exercise properly after drinking water, the contraction of abdominal muscles will strengthen the washing power of drinking water on the gastrointestinal tract. If you add some salt to the water, it can also detoxify while cleaning the gastrointestinal tract.
Drinking water on an empty stomach in the morning is obviously good for human health, but the effect cannot be exaggerated. There was a time when "drinking water therapy" was popular in society, saying that drinking cold water after getting up every day could cure all diseases. Excited for a while and then died, because it was too exaggerated. Some people are eager to cure diseases, drink too much water and even get water poisoning.
Never drink too much.
Some people's drinking habits are unscientific. Under normal circumstances, they can't drip water. When they want to drink water, they drink it all at once, and even call it "happy". In fact, this is a joke about the body.
The water in human body is mainly distributed in blood, tissue fluid and cell fluid, and it must remain relatively stable in the body. The cell membrane of human body is a semi-permeable membrane, and water can permeate freely. If the water in the body is greatly increased, the blood and tissue fluid are diluted, and the osmotic pressure is reduced, water will penetrate into cells, causing symptoms such as cell swelling, water poisoning, headache, vomiting, fatigue, blurred vision, drowsiness, slow respiratory heart rate, confusion, convulsions, etc. Fortunately, the human kidney has the function of regulating the amount of water in the body, and maintains balance by reducing excessive water through urination. But if you drink too much for a long time, it will inevitably increase the workload of the kidney and accelerate its aging.
In addition, binge drinking will increase the gastrointestinal burden, dilute gastric juice, reduce the bactericidal effect of gastric acid, and hinder the digestion of food. Too much water in the stomach, too heavy weight, easy to gastroptosis. Excessive drinking in patients with heart disease will lead to heart failure due to heart overload.
It can be seen that drinking water should be moderate. Drink less at a time, drink many times, and overeating will do harm to your health.
Fresh water does not quench thirst.
Everyone has this experience. It is hot and humid in midsummer, and the human body is extremely thirsty because of sweating a lot. We drank cold boiled water cup after cup. The result is that the more you drink sweat, the more you drink urine, and the more you drink, the more thirsty you are. This is what we call "fresh water does not quench thirst".
When people queue up to sweat, many vitamins and electrolytes will be lost with sweat, especially sodium chloride. If you drink salt-free fresh water after sweating a lot, the water entering the body can't stay in the cells, but it is easier to be excreted with sweat or urine, which leads to more thirst. Sometimes it can cause low sodium symptoms such as palpitation and fatigue.
Therefore, after sweating a lot, it is best to put a small amount of salt in drinking water to quickly replenish water and electrolytes. High-temperature workers such as steelmaking and ironmaking usually use salt and soda to replenish water in their bodies, and develop sports drinks on this basis.
After sweating a lot, be sure to drink salty drinks to maintain the balance of electrolytes in the body. The reason is the same.