Test yourself: How well do you know your body?

What sound is already too loud and can permanently damage your hearing? Are those who play sports more intelligent? Where on the body does stress manifest itself the most? In the following test, you will find out if you understand your body language.

1. Did you go to bed late again? It’s nothing – or is it? When will the physical consequences of lack of sleep show up?
A: When a person does not sleep even once a week.
B: After just one night of sleeping less than six hours.
C: If you sleep less than 50 hours per week.

2. The pain threshold of our hearing lies at 120 to 125 decibels. Then hearing cells can suffer serious damage. What sound is so strong?
A: Pneumatic hammer.
B: Music at the disco.
C: Popping an inflatable balloon.

3. Sport not only trains the body, but also the spirit. How quickly does regular endurance training improve brain performance?
A: After a week.
B: After half a year.
C: After a month.

4. “It runs in the family.” Whether it’s being overweight or infidelity, we often blame it on our genes. Or can we somehow change the blueprint of our cells?
A: We cannot change our genes, but we can influence their activity or inactivity.
B: No, our unchangeable traits are prescribed in our genes.
C: Yes, but these changes cannot be inherited.

5. Our body consists of ten to one hundred trillion cells. In the brain, their number gradually decreases during life. What about the number of our fat cells?
A: It is the same throughout life.
B: When dieting, it is reduced first.
C: It is reduced if we permanently change our diet – that is, after about a year.

6. You are what you eat. When food intake increases significantly – for example by a thousand calories per day, then…
A: …weight gain can be avoided if we simply move more during our daily activities.
B: … one would have to go to a marathon or the Tour de France in order not to gain weight.
C: … a person will gain weight in any case, regardless of how much he does sports.

7. Anyone who wakes up at night and can’t go back to sleep can best deal with insomnia by…
A: … counts sheep.
B: … gets out of bed.
C: … to make up for the deficit, he sleeps through lunch.

8. Pain is not only unpleasant, but also changes our brain. After how many days does the brain remember the pain?
A: After ten days of constant pain.
B: After a month of regular pain.
C: It is individual.

9. Are you stressed again? The body feels it too. Where does stress manifest itself the most?
A: On the stomach.
B: On the joints.
C: On the amygdala, the “tonsil” in the brain.

10. We have hundreds of millions of nerve cells in our intestines. What can these cells in the abdomen do?
A: To affect feelings such as anger, rage or joy.
B: To remember the numbers from one to nine.
C: That has not been explored yet.

Correct answers:

1B: After just one night of sleeping less than six hours. A lack of sleep will show itself after just one too short night on the overall metabolism, for example the body temperature will drop, the blood pressure will rise, the skin will look dull and colorless. After 17 hours without sleep, our performance will decrease as well as with 0.5 parts per million of alcohol in the blood. 24 hours of wakefulness have comparable consequences to 1 to 1.2 per thousand of alcohol in the blood.

2C: The burst of an inflatable balloon can reach up to 130 decibels – if it has not been fully inflated with air or has already been blown up a few times. Disco music and a pneumatic hammer are a bit quieter at 100 to 110 decibels. But beware: even this intensity of sound can damage hearing. Not immediately, but the risk increases with how often a person is deafened like this.

3B: After six months of endurance training, according to studies, attention increases, the brain processes information faster and memory improves.

4A: We cannot change genes, but we can influence their activity or inactivity. The so-called epigenetic changes mean that the activity of some genes – rather healthy than those that cause diseases – can be turned on or off, for example, through eating habits. And this activity pattern is even inherited.

5A: It is the same throughout life. The number of fat cells is established in childhood, only their size can be changed – for example, by diet.

6A: Weight gain can be avoided if we simply move more during our daily activities. An American study showed that people who didn’t gain weight despite increasing calories unconsciously moved via C: they carried heavy boxes, walked more stairs, were simply more active.

7B: He who gets up and lies down again only when he is really tired is letting the body know that the bed is a place of rest and not of tossing and meditating. And he easily falls asleep again. On the contrary, an afternoon nap can make nighttime problems even worse.

8C: It varies. It is impossible to tell when the pain becomes chronic. Stress, for example, increases this risk. If the pain lasts longer than three months, you should see a doctor. Because the longer the pain lasts, the stronger the memory of the pain is created and the harder it is to get rid of it.

9C: Chronic stress takes its toll on our limbic system – the brain structure that is responsible for emotions, and thus changes our perception of feelings.

10C: It has not yet been reviewed. Although there are molecular structures in the intestine that should, in principle, be able to store memories, it has not yet been proven whether this actually happens.

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