Why do people drink water?
Water is the basic component of all living things, the essential substance for human survival and the constituent substance of body cells.
About 50%-70% of human body weight is water. Moreover, water participates in every process of human food digestion, absorption, transportation and utilization. Water is the medium for absorbing and transporting nutrients and the carrier for excreting wastes, so water participates in the whole metabolic process of human body.
Human blood, sweat, tears, saliva and urine all contain a lot of water. The reason why people want to consume water is mainly to maintain the normal concentration of body fluids. If the body loses 15% to 20% of its weight, it will stop its physiological function and even die.
To sum up, the function of water can help digestion, excrete waste, lubricate joints, balance body temperature, maintain cells, balance blood, and improve the circulation of blood and tissue fluid.
If a person only drinks water without eating, he can maintain his life for about a month. But without water, people can only live for a week at most.
How to drink water correctly?
Many people say, do you still need to be taught to drink water? Don't you just drink when you are thirsty and eat when you are hungry? Still need to learn? In fact, it is precisely because water plays an important role in us that we should pay more attention to healthy drinking water.
1. Not all water is suitable for drinking. In addition to polluted water, generally speaking, water left standing for more than three days is called dead water and aged water, which is not suitable for drinking.
The more water you drink, the better. Although drinking more water is good for the human body, don't drink too much. If you drink too much water, the sodium content in the blood will decrease, and brain edema will easily cause headaches, nausea, vomiting and other symptoms.
3. Drink light salt water after sweating. Many people sweat a lot during exercise or summer, so it is necessary to add a little salt when drinking water, because a lot of sodium ions in the blood will be excreted with sweat, and salt is added to supplement sodium ions. People with kidney and heart diseases, especially those with edema, should limit water and salt. )
The advantage of drinking water on an empty stomach is that the water stays in the stomach for a short time and is quickly absorbed by the small intestine, so that the water in the body can be quickly replenished without affecting the digestion of food in the stomach.
Don't feel thirsty before drinking water. Once you feel thirsty, it means that your body is seriously short of water. Even if our mouths are not thirsty, we must get into the habit of drinking water often.
6. Drink water early. Drink a glass of warm water before breakfast. Because after a night's sleep, we will be dehydrated by sweating and urinating. If you drink a glass of water after getting up, you can enhance your immunity.
How much water does a person drink a day?
A person needs to drink about 1000 ml- 1500 ml of water a day, that is, at least two or three bottles of mineral water, plus the water intake in the diet, a total of 3000 ml of water is needed. So there is a saying that it makes sense to drink eight glasses of water every day.
Why do foreigners drink ice water?
Whether in TV series or in daily life, we always get used to drinking ice water when we see foreigners drinking water. As a resident of China, Bian Xiao can only envy silently, but he can't follow the trend, because he will have a stomachache after drinking ice water. In fact, because of different diets and different constitutions, some experts have given the answer. Western food eaten by foreigners is mostly high-calorie food, such as hamburgers, cream, beef and so on. Therefore, their constitution is relatively hot, and it is no problem to drink some ice water. Of course, it cannot be said that foreigners only drink ice water. They have the habit of drinking hot coffee, and so do the British. They should have soup first when eating. These are all hot water, not boiled water.
What if drinking water is always easy to choke?
1, if the child is still feeding water with a bottle, it depends on whether the size of the nipple is suitable for the child; Then use your wrist to measure whether the water temperature is appropriate; If the baby is very young, you can't directly let the baby drink water on his back, which is easy to choke, but keep his body tilted about 45 degrees.
2. If the child is older, don't give the child breathless water after running or exercising, it is easy to choke, and don't divert the child's attention when drinking water.
In fact, there is a scientific basis for choking on drinking water. When drinking water, the muscles of the throat will pull the throat forward and close the passage between the pharynx and trachea. But if you drink too much water, the pharyngeal cartilage will not be completely closed, and the water will run into the trachea and choke to death!