There are many things in life that you think are correct
In life, many common sense that you think is correct may be wrong. Today, let's introduce 21 common sense that you didn't expect, and let's dispel those fallacies together.
1. Is scalding ointment useful for burns?
The most important thing when scalding is to apply ice to the injured tissue so that the hot topic suffered during the scalding does not cause other damage. Doctors recommend: Soak the burn or scalded area in cold water for at least 20 minutes and seek medical assistance immediately.
2. Should I raise my chin when I have a nosebleed?
The only advantage of this method is that it will not drip blood on clothes or the floor, but the bleeding will not stop because of this. Instead, the blood will flow into the throat, and in more serious cases, it can even cause vomiting and choking symptoms. A better way to deal with it is to insert a small cotton ball into the bleeding nostril, then gently press the nose, and tilt the head forward. An ice towel or wet towel around the neck can also help stop the bleeding.
3. Are girls worse at math than boys?
The question of whether boys and girls are gifted differently has been off the table for a long time. Despite this, there has been repeated evidence that there is a complete difference between men and women. According to studies, the average girl performs better in language tests, while boys do better in technical subjects. In mathematics, it seems necessary to make a further distinction: in tests of spatial imagination and mathematical inference, boys are mostly dominant, while girls are stronger in numeracy.
4. Does sweat smell bad?
Sweat turns out to be odorless, otherwise everyone would have to put a clothespin on their nose when washing and drying clothes. However, sweat contains a lot of organic substances, which are nutrients for bacteria; when bacteria start to break down sweat, they produce unpleasant-smelling excrement, which is the source of sweat odor.
5. If you shave off your armpits, will you sweat less?
Shaving the armpits has no effect on the production of sweat. On the contrary, after shaving the armpits, the armpits will leave sweat stains on the clothes because the water discharged cannot be hidden in the hair. As long as the sweaty armpits are washed before the sweat decomposes, there is no need to worry about the problem of heavy body odor. On the contrary, shaving the armpits may cause abscesses of the hair roots.
6. It is best to keep eggs refrigerated, otherwise there will be Salmonella?
In this case, the eggs would also be sold refrigerated. This is actually because the number of Salmonella in the refrigerator is very small. However, it is easier to help Salmonella grow in a hot and cold environment than in warm conditions.
Therefore, if there is an interruption in the refrigeration process between the store and the home, it is best not to refrigerate the eggs when they are sold, but to put them in the refrigerator after buying them home. This alternating heat and cold environment should also be avoided when eating raw eggs.
7. Should I brush my teeth immediately after a meal?
Generally speaking, brushing your teeth immediately after eating is not a very recommended practice, because the acid in the food will erode the enamel, and brushing your teeth immediately at this time will only strengthen the damaging effect of the acid. Therefore, it is recommended to rinse your mouth, remove most of the acid in your mouth, and then brush off the food residues attached to your teeth after about half an hour.
8. Do drugs have the same effect on men as they do on women?
Recent medical research has come to accept that drugs work in absolutely different ways for men and women. On the one hand, everyone responds to the drug in their own way, and on the other hand, there are factors that can cause the drug to react differently in men and women. For example, aspirin may be given to men to prevent heart attacks, but it has little effect on women.
Fat-soluble drugs like narcotics are administered at different doses to women because, on average, higher doses are needed to get the drugs to work on a woman's fat tissue. The way enzymes concentrate in the body can also be affected by the drug, but this is not just about gender, but also seems to be related to racial differences.
9. Does special food for children specifically meet the needs of children?
These foods are sweet, colorful, creamy, and have vivid cartoon patterns on the packaging to attract small consumers, but these foods have nothing to do with the body structure of children. General "adult food" with less sugar and additives may be healthier!
10. How many seconds does a dream last?
For a long time, sleep experts believed that each dream lasted only a few seconds, even if the dreamer felt as if he had had a long dream. In fact, people often took a nap as if they had read a long novel. But now we have established that some dreams can be as long as 30 minutes. Dreams that occur near morning are usually longer than those that occur at the beginning of sleep. In addition, everyone dreams - even if he himself doesn't remember anything at all.
11. Is combing your hair 100 times a day good for your health?
Brushing your hair too often can irritate the sebaceous glands on the scalp. If you have oily hair, you should try to avoid combing your hair, and dry hair will be smoother and tougher. Combing your hair 100 times a day is especially recommended for people with long hair, and it should be combed to the end, but you can only comb your hair with a comb made of natural mane. Otherwise, combing your hair too frequently will cause more damage than good.
12. Is myocardial infarction a disease of wealth?
Wrong! Myocardial infarction is a disease of lower socioeconomic status, and people in lower social status are more likely to get myocardial infarction than people in management classes. On the one hand, because their living conditions are usually less healthy, they don't eat enough nutrition, smoke heavily, and don't exercise much; on the other hand, they are on average less resistant to stress, and many people in the management class see stress as a stimulating challenge.
But generally speaking, they are already protected in society, so nothing unexpected will happen. But for people with very little social security, stress is usually a threat to life, and they can only do nothing in the face of pressure.
13. Do cigarettes have a calming function?
Smoking does have a relaxing effect on smokers, but this is not because nicotine really has a relaxing effect, but because people who are dependent on nicotine can suppress the phenomenon of trance as long as they get cigarettes. The pressure that addicts endure when resisting cigarettes is something that non-smokers have never experienced.
14. Is walking more strenuous than standing?
This sounds very logical, after all, one is doing the action, and the other is doing nothing. But why is it so tiring when standing? Standing is not more comfortable than sitting, because when standing, the legs are always bearing the weight of the body, and in turn, when walking, each step can relax the other foot.
15. Are people with sweet blood more likely to be bitten by mosquitoes?
Mosquitoes can't smell blood at all! But they have amazing heat sensitivity, even the difference of 0.05 degrees Celsius can be detected, so it is not difficult for them to find a delicious "warm blood molecule" in the summer dusk, they can easily find the thermal image that makes them salivate.
The carbon dioxide and water vapor in the air we breathe out attract mosquitoes, and only the females, who need the protein in the blood to make their eggs, bite, and after laying their eggs, they stop.
16. Is it enough to apologize once?
John Gottman, a famous marriage scholar in the United States, observed the interaction between many couples or couples when they quarreled or talked about things, and he believed that apologizing only once was not enough. After each uncomfortable word, there must be about 4 positive, apologetic words or expressions before the other party intends to forgive.
17. Is the toilet a very unsanitary place?
The toilets that are often cleaned with water are actually much cleaner than people's stereotypes. On the contrary, scientists engaged in household bacteria research have made a shocking discovery that there are unexpectedly many bacteria hidden on the surface and inside of computer keyboards. Most of the bacteria in the home are hidden in the drain pipe on the inner wall of the refrigerator, and even the number of bacteria on the dishcloth can not match the amount of bacteria here.
18. Smart people have bigger brains?
Size doesn't matter. It's the structure of the brain that matters. The function of the human brain is determined by closely intertwined neural networks that connect separate domains, and in the case of dementia, this connection function is usually dead. Malnutrition in childhood can lead to inadequate network connectivity, thus hindering intellectual development. Whether the brain itself is larger or smaller is completely irrelevant and does not affect IQ.
19. Do marriages often break down during the "seven-year itch"?
If there is a quarrel, they often break up earlier. The data shows that the time is between the 4th and 5th years, but this is only a median value, because the divorce rate of couples who can celebrate silver marriage is also getting higher and higher, which increases the average. In Germany's experience, many marriages end 25 years ago.
20. Is glucose derived from grapes?
It is called glucose because it was first confirmed in grapes, and it is found in every plant. Its scientific name is glucose. It plays an important role in the process of photosynthesis and human metabolism that converts sunlight into usable energy. In industry, glucose is not extracted from grapes, but from low-cost mass-produced crops such as potato or cornstarch.
21. Can peracidic foods cause gastric perforation?
It's a common horror fairy tale for parents who can't do anything to stop their kids from eating too much soda and other messy sweets. The human stomach contains stomach acid that digests food, so our stomachs are not hurt by acidic substances.
For the sake of our health, you have to look at the problem again. These 21 health common sense turned out to be wrong, and luckily I saw it with you.
