7 surprising facts about your body help you explain many things in life

Did you know, humans are the only creatures that can blush? And why do we still have headaches when we have a toothache?

For centuries, the human body has always been an inspiring topic for researchers and a source of countless inventions. Perhaps few people suspect that the human eye is what inspires the camera, while the design of the iconic Eiffel Tower of Paris comes from . human thigh bone.

If so, to see that our bodies have a lot of interesting facts, you will know a few right away.

1. This is why toothache is always accompanied by headache

Nerves are connected from the jaw to the brain.

Have you ever had a toothache? For tooth decay, or wisdom teeth, for example? If you have, you also realize that toothache seems to cause headaches as well, and both happen at the same time.

In fact, they are really related to each other. Take a look at the picture above and know: there are nerve connections connecting the jaw to the brain. It is the trigeminal nerve, one of the largest receptor nerves in the head area.

It also links to the face, jaw, teeth, and structures inside the teeth. According to Glenn Clark, a dentist at the University of Southern California, this excessive connection structure can cause pain to spread to many other areas. So there is a toothache that comes with a headache.

2. When sleeping, the brain is more active than in the province

During REM, the brain processes more information when we are awake.

This is a fact that scientists have confirmed since the 1950s, but until now, very few people know.

Accordingly, during the same time, the sleeping brain has a very strong frequency of activity - especially REM (rapid eyes movements). Science thinks that this is the period when we dream, and the brain therefore processes much more information than we did when we were awake.

3. The special ability of only human beings has: Red face

We are the only creatures on Earth capable of blushing in emotional change situations (such as feeling embarrassed, or angry).

The reason behind this ability is unknown. However, scientists hypothesize that because human skin has evolved to show more clearly, blushing is like a mechanism for expressing emotions, helping the opposite person get empathy.

4. The brain does not know pain

The brain does not have pain receptor receptors.

There is a paradox: even though the brain can control every part of the body, even giving painful signals, but it itself does not know pain.

Further explanation, this means that the brain has no pain receptors. It means that if you touch or hurt your brain, only the outer areas hurt, and the brain doesn't feel anything.

In return, our brain is the most active part of the body, and it accounts for 25% of the oxygen we load.

5. The beard is the fastest growing part

The hair is the fastest hair growth on the body.

It is not natural that the brightly lit eyebrows have to be shaved - so he still has 2 days of shaving. Simply because the antennae are the fastest growing hairs on the body.

6. Same: fastest growing middle finger nail

The speed of nail growth actually depends on the location of each person. However, for the majority, the middle finger grows fastest, and the smallest finger is the slowest.

7. Old age will make you eat poorly

After age 60, we will lose about 40% of the taste receptor on the tongue.

Old people eat and drink less in quantity, not as much as young people. But it's not over yet, because they still don't feel good.

The reason is that after age 60, we will lose about 40% of the taste receptor on the tongue.