Human 'odd actions'

Not everyone knows the daily actions such as crying, hiccups, sleeping, blinking . how to affect the body. Also see them from a scientific perspective.

1. Crying

Scientists believe that tears not only express emotions but also play a role in endocrine components and increase protein in the period of stressful people. This explains why when we finish crying, we feel relieved.

2. Hiccup

Hiccups are caused by a sudden contraction of muscles used to inhale. As soon as those muscles begin to move, the glottis (the space between the vocal cords) closes the windpipe to create a characteristic " hic " sound.

Although we encounter no trouble about the hiccups but this physiological activity of this body often occurs.

3. Sleep

We spend a third of our lives sleeping. Even when sleeping, parts of the body still function normally. In particular, sleep has a great effect on the nervous system, helping us stay awake in studying and working.

4. Dead

We all know everyone in the world must die, regardless of nationality, gender, age.

We die because the cells in the body die. Every day, though cells are always replaced, the process cannot happen forever. Therefore, death is also considered one of the daily activities of people.

5. Look at three-dimensional space

Looking at the three-dimensional space means that the eyes see all images of things at different angles, creating many images. This happens because the brain controls the eyes differently, there is a difference between the right and left eye images.

Our brain uses two deviations of two eyes to create a new image with depth. Thus, we can see three-dimensional images in our own eyes.

6. Blushing

Sometimes, we blush in front of an action, an incident. Experts said that the emotions were agitated, the spirit of stress caused the cortex to be excited, causing excitement for the sympathetic nervous system. This system will stimulate the adrenal glands to secrete many stimulants. It on the one hand causes the heart to beat fast, high blood pressure, on the other hand expands muscle and blood vessels under the skin.

The fast pulse makes us feel like the heart is strong. Expanded subcutaneous blood vessels make the whole body heat and blush. By the time the heart returns to its normal state, the spirit is relaxed, then the face is completely red, because the excitement of the cortex ends, the mental state stabilizes.

7. Kiss

>>> Kisses from a scientific perspective

When you think about kissing, saliva is secreted and it is a biological instinct of people. Kiss has many effects both psychologically and externally. Psychologists said that this psychological action helps people get closer to each other.

8. ' Farting '

All food, drink after digestion, produce gas. In fact, every day, their bodies ' deflated ' up to half a gallon (1.9 liters) of gas each day.

During digestion, food bacteria produce very uncomfortable hydrogen gas and fly into the air. This is a very normal biological activity of people every day.

9. Laugh

Psychologists believe that laughing is an alternative response to other people's answers. Laughing is one of the most subtle forms of human expression. Researchers have listed dozens of different wedding styles. Each laugh shows different emotions and meanings.

Laughing is to find a strength in relationships and a smile also expresses our soft feelings.

10. Blink

Blinking nervous reflexes that only high-end animals have, is the most complete development of humans. This reflex helps lubricate the eye.

In addition, blinking is also the regulation of the retina and eye muscles. The average person blinks about 10 times per minute, 0.2- 0.4 seconds each time.