Meet these phenomena often but not everyone knows the cause

Why is the skin skin wrinkled after soaking in water for too long? Why do we often sneeze when going out in the sun? . These phenomena are so familiar to everyone but not everyone knows the cause and why they appear.

 

Many want to sneeze when looking at the sun or getting glare directly into the eye.

Sneezing is one of the natural reflexes of the human body. The cause of sneezing may be because you are cold, inhale a strange scent, be sensitive to pollen . In addition, many people claim they feel like sneezing while looking at the sun or light. shining straight into the eyes.

Scientists call this strange phenomenon Autosomal Dominant syndrome Helioopthalmic Outburst Compelling (abbreviated as ACHOO) . When light hits the eyes, the optic nerve sends signals to the brain, requiring the pupil to be narrowed down. However, in some cases the brain is mistaken, this signal is sent to the nose and makes us sneeze. It is known that only about 22% - 30% of people around the world are excited to sneeze by sunlight or glare.

Vertical hair

This is a natural phenomenon that occurs when the skin is cold.

Surely everyone of us experienced the feeling of being goosebumps. This is a natural phenomenon, which occurs when the skin is cold, the small muscles under the hair shrink, causing the hairs and legs to stand upright.

In addition to bumps and bumps, the body hair is raised upside down in case you are afraid, threatened or overjoyed to stimulate the sympathetic nervous system to release hormones adrenaline that causes muscle contraction, leading to phenomenon of bumps and feathers.

Feel the phone vibrate when left in a pocket

This phenomenon is like being afraid of something.

Have you ever felt your phone vibrating in your pocket but didn't check any calls or reminders when checking it? Research by scientists has shown that about 80% of us have experienced this feeling, known by scientists as vibrating imaginative syndrome (Phantom Vibration Syndrome - PVS).

However, scientists have yet to find the exact cause of this phenomenon. Experts from Massachusetts and the United States hypothesize that false signals may be the result of mishandling sensory signals when the cortex is overloaded with information causing confusion. Because the human brain is expecting a call, it interprets sensory information in the wrong direction. The stimulus can be misinterpreted as friction on the leg pants, muscle .

This phenomenon is like being afraid of something, such as having a snake when you go camping. Make sure that the whole day you will not be able to sit still and startle every time you accidentally touch the object that the brain thinks is solid but in fact it is just a dry branch.

However, you don't need to worry about this hallucination. Try to stop the habit of putting the phone in your pocket for a few weeks, feeling the phone vibrate will gradually disappear.

Why does the body stink?

Body odor caused by bacteria that proliferate.

Sweat is believed to be the main cause of body odor. Typically, body odor is caused by bacteria that multiply, forming acids that cause unpleasant odors.

At each stage in life, our bodies secrete different odors. They reflect human activity for a period of time, as well as a noticeable health warning sign, such as fruity breath signals that you have diabetes.

In case you rarely go out, improper personal hygiene and do not drink enough water leads to aging, the body's cells and organs degrade, resulting in a characteristic smell. People often call it 'the smell of old people'.

 

Wrinkled skin is a reaction controlled by nerves to control wrinkles by shrinking blood cells under the skin.

Previously, many studies have shown that wrinkled skin after soaking the water for too long is due to osmosis, the outer skin absorbs and becomes puffy. However, according to the scientific article published in Brain, Behavior and Evolution magazine, the wrinkled fingertips and toes are called "rain treads" - the reaction is controlled by nerves to check. control wrinkles by shrinking blood cells under the skin.

The benefit of wrinkling your fingertips and toes is to help us grasp better in wet conditions, increase the grip of the foot to the floor, avoid falling after stepping out of the bathroom.

Feeling 'sharp minded' when eating ice cream

The feeling of 'sharpness' is caused by the sensory nervous system in the mouth.

Whenever we eat ice cream or drink cold water, we often have a feeling of freezing from the palate to the top of the head. In 2013, this phenomenon was officially named by scientists as a cold-stimulating headache.

The feeling of 'sharpness' is caused by the sensory nervous system in the mouth. When the palate is suddenly cold, the brain performs the delivery of hot blood to warm cold areas on the body. Sudden changes in temperature cause blood vessels to constrict and expand continuously to help the body quickly respond to cold stimuli. This phenomenon is believed to be the direct cause of acute pain when we eat cold food.

In addition to waiting for your body to react, you can also reduce the feeling of sensitivity by rubbing the sides of your jaw with your hand, helping to balance the temperature of the area, while reducing the process of contraction and relaxation. blooming of blood vessels.

 

This is a sign of empathy.

Yawning is an unintentional act of the body, which releases energy when the brain is tired and provides oxygen to help the brain work better. We can't control the yawn after seeing the other person yawning. Scientists call this phenomenon "yawn" and they believe this is a sign of empathy.

The puzzling thing is that some people not only get "yawning" from others but this phenomenon also occurs when we see an animal yawning or simply seeing the word "yawn" just enough to bout yawn sad. Until now, scientists have not found the answer to this strange phenomenon.

Laugh when tickled

This reaction is related to human fear.

Whenever being tickled, besides the unpleasant feeling of "tickling sadness", our first reaction is to laugh. Why is that? Scientists believe that this reaction is related to fear. of people , when they are touched by other people, and this is also the reason why we do not feel anything when we tickle ourselves.

In some areas of the body such as the neck, armpits, soles of the feet . people feel vulnerable so they cannot control laughing or opposing actions if they are touched on sensitive areas. feel it.

Why do we cry when sad?

Crying is the most effective method to release negative emotions.

Not only is sad, but many other emotions like stress, anxiety, or even happiness are the cause of our tears. Scientists believe that crying is the most effective way to release negative emotions . Tears also play an important role in mental recovery, helping people become more excited and comfortable after crying. So, we have no reason to swallow our tears but instead just cry so loudly, the pain has gradually eased.