10 common sense facts that have been misrepresented for years, the first one is the one that got hit

Raise your chin when you have a nosebleed, smart people have big heads, brush your teeth after meals, combing your hair 100 times a day is good for your health... There are far more common sense in the world that is easy to get wrong than you know. It's time to refresh your knowledge base and take a look at which of the following statements have deceived you.

Mistake 1: Keep your chin up when you have a nosebleed

The only advantage of this method is that it will not let the nosebleed flow onto the floor, but it will not stop the nosebleed. Instead, it will cause the nosebleed to flow into the throat and may even cause vomiting and suffocation.

The correct way to do it is to stuff a small cotton ball into the bleeding nostril, gently press the nose wing, and tilt the head forward, or wrap an ice towel or a wet towel around the neck to stop the bleeding.

Myth 2: Combing your hair 100 times a day is good for your health

Excessive combing of the hair will stimulate the sebaceous glands on the scalp, especially for people with oily hair, who should comb their hair less. If you have long dry hair, it is more suitable to comb your hair more often. However, it is best to use a comb made of natural bristles, which is less likely to damage the scalp.

Mistake 3: Sweat stinks

Sweat has no smell. However, sweat contains a lot of organic substances, which are nutrients for bacteria. But when bacteria decompose sweat, they produce unpleasant excrement.

Mistake 4: Brushing your teeth immediately after a meal

Brushing your teeth immediately after eating will cause the acid in the food to erode the enamel, which will only increase the destructive effect of the acid in the food on the teeth.

The correct way is to rinse your mouth first and then brush your teeth after half an hour.

Myth 5: Drugs work the same on men and women

The latest research shows that the effect of drugs on men and women is definitely different. For example, aspirin can help men prevent myocardial infarction, but it has little effect on women. For lipid-soluble drugs such as anesthetics, women need to use larger doses than men.

Mistake 6: Shaving your armpit hair can reduce sweating

Shaving armpit hair has no effect on preventing sweat production. On the contrary, after shaving armpit hair, the water discharged from the armpits cannot be hidden and leaves sweat stains on clothes. Moreover, shaving armpit hair can easily cause hair root abscesses

The correct approach is to wash your sweaty armpits before the sweat breaks down.

Mistake 7: Walking is more tiring than standing

Because, when standing, your legs are always bearing the weight of your body and both feet cannot relax. While walking, one leg bears the weight while the other is relaxed.

Mistake 8: People with sweet blood are more likely to be bitten by mosquitoes

Mosquitoes can't smell blood at all. But mosquitoes are extremely sensitive to heat and can detect even a difference of 0.05 degrees Celsius. Therefore, when we exhale carbon dioxide and water vapor, we attract mosquitoes.

Mistake 9: The toilet is a very unsanitary place

Toilets that are frequently cleaned with water are much cleaner than people stereotype. Experts in household bacteria research have found that most bacteria in the home are hiding in the drain pipes on the inner wall of the refrigerator, and the amount of bacteria on the rag is more than that in the toilet.

Mistake 10: Smart people have big heads

The size of the brain is not the key to determining whether one is smart or not; the structure of the brain is what matters. The function of the human brain is determined by the neural network, and people with low IQ have lost some of these functions, which has nothing to do with the size of the brain.

Would I tell you that I won most of them? What about you?