This year, it is actually not easy to drink saliva.
It seems like a particularly simple thing, but many people always make it complicated, resulting in careful drinking.
Let me ask, this is really Yanba's mother opening the door for Yanba, it is really ---- salty (idle) to go home!
Water is really important to the human body
Water is extremely important to life.
If the body is in a state of lack of water for a long time, in addition to the feeling of thirst, the entire body will also be affected, such as causing the body toxins to be unable to be discharged, affecting the digestive system, making the blood become viscous, etc.
Therefore, everyone must replenish enough water every day to make the body organs function normally.
If the water has not been dripped, people can only barely survive for 3 days, and few people can survive for more than 5 days under extreme conditions.
According to dietary guidelines, an adult needs to drink about 1500-1700ml of water per day, which is equivalent to 7-8 cups of ordinary size 200ml.
Of course, we don't necessarily require "the amount of eight glasses of water per day."
After all, each of us has a different weight, diet, and activity, just follow your own needs.
Repeated boiling water has carcinogens, can not drink?
Repeated boiling water, which is what we often call "thousand boiling water".
Water does have nitrites, but they are not produced overnight or as if they were boiled, but a substance that is already in the water.
As we all know, the water that everyone drinks is surface water, and when these waters flow through certain areas (such as farmland, farms, etc.), they will be polluted by nitrogen-containing fertilizers and manure, which will greatly increase the content of nitrite in the water.
Although the tap water that everyone usually drinks is disinfected and filtered by the water plant, it does not completely filter out nitrite and nitrate.
The water produced by waterworks in each region of the continent strictly adheres to national security water standards, and the standard limit of nitrate (in N terms) is 10 mg/L (0.01 g).
If the conversion is based on the toxic dose of nitrite 0.3-0.5 grams, it is necessary to drink at least 20 tons of water at a time to produce nitrite poisoning.
For nitrite, there is really no need to feel panic, not only the figure of nitrite in the water, but also the nitrite is widely present in various foods.
For example, the ham sausage we often eat is a big nitrite household, but who will consider nitrite and give up eating it?
Regardless of the dose to talk about harm, it is definitely a kind of pseudoscience.
Therefore, after repeated boiling more than 20 times, the nitrite content of boiled water is less than 3% of the daily level, which is not enough for us to worry about.
In addition, if you really don't dare to drink thousands of boiling water, then why do you dare to drink the old fire soup that has been boiled for many hours?
Yin and yang water, some cases really can not drink?
The so-called yin and yang water is to mix raw water such as tap water, well water or river water with hot water.
However, if raw water is not disinfected, it may contain harmful microorganisms, so if they are mixed and drunk, it may indeed cause harm to the human body and lead to disease.
However, if these raw waters have been heated at high temperatures, disinfected and sterilized, or mixed with boiled water, bottled water, bottled water after cooling, etc., in fact, it is only mixed with water of different temperatures.
However, there is a problem with boiling water, that is, ---- hot mouth! Long-term drinking may damage the mucosa of the esophagus, and it can really cause the risk of esophageal cancer.
Therefore, we still wait for the hot water to cool naturally before drinking it.
Hard water, drinking it will be harmful to health?
The so-called hard water refers to water with high content such as calcium and magnesium ions, such as often boiling kettles, which often appear scale.
And calcium, magnesium itself is an essential element of the human body, in fact, there is nothing to fear, even if you drink 2L of water every day, the calcium content of the human body is not even as good as a glass of milk, so there is no need to worry too much.
However, hard water has a disadvantage, that is, the taste of ---- is not very good.