Can waking a sleepwalker be fatal?

There are some widely circulated "medical common sense" among the people, and the good and the bad are mixed, but few people doubt the authenticity of this common sense. If you are a highly educated person who loves science, let us trace the origin today, distinguish the right and wrong of "medical common sense" from several typical examples, and talk about how "real medicine" can stop rumors at the hands of wise people.

Waking someone up from sleepwalking can be fatal

Many people believe that waking a sleepwalker can cause a heart attack or induce a coma.

In fact, the opposite is true. Not waking up a sleepwalker is dangerous. A sleepwalker may be confused if they are woken up, but if they are not woken up, they may fall down the stairs, break windows, or drive away.

Waking a sleepwalker can sometimes be risky because the sleepwalker may react violently when awakened.

The correct approach is to guide the sleepwalker back to bed. If the sleepwalker is unwilling to do this, you can wake the sleepwalker up with a loud and sharp voice from a safe distance. This may scare the sleepwalker, but it is better than shaking the sleepwalker awake and possibly being attacked.

Eating before swimming can cause cramps and drowning

Many people have heard this advice: After eating, wait one hour before swimming, otherwise you may get cramps or even drown.

The fact is that if you swim very vigorously, you may get tiny cramps. But for the average swimmer, there is no need to worry because the chances of drowning from cramps are low. Aside from drinking a lot of alcohol before swimming, which increases the risk of drowning, there is absolutely no link between eating and drowning or near-drowning incidents.

The tendons are blue

People often use the phrase "blue veins exposed" to describe when they are angry. Even when they are not angry, the veins on their arms look blue.

In fact, blood is always red, even venous blood that lacks oxygen is only dark red. The reason it looks blue is because of the absorption, reflection and scattering of light in skin tissue, the effect of blood oxygen content on light absorption spectrum, the size of blood vessels and the effect of human eyes.

Taste is produced in specific areas of the tongue.

Many people believe that different areas of the tongue are responsible for producing different tastes such as sour, sweet, bitter, and salty.

The fact is that all tastes are produced by taste buds located all over the tongue. Some parts of the tongue may be more sensitive to certain tastes, but the differences are very small and vary from person to person.

In addition, our sense of taste is not limited to the four types of sour, sweet, bitter and salty. There is also a fifth type: umami, which is the taste produced by MSG.

Children will become hyperactive if they eat too much candy

There is a view that children who eat too much sugar will be in a state of turmoil because they are taking in too much energy and have nowhere to use it.

In fact, there is no scientific evidence that sugar can increase energy levels in children. Studies have shown that sugar does not affect children's behavior or cognitive abilities. The previous belief that children are more "sensitive" to sugar may be confused with the fact that children are naturally very active in situations where they eat a lot of sugar (such as birthday parties).