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in fact , the blush is caused by the command of the head . It turns out that our visual and auditory scriptures are all in our heads. When we see and hear things that make us shy, our eyes and ears immediately transmit the information to the cerebral cortex, which in addition to the relevant parts, At the same time, the adrenal glands are stimulated, and as soon as the adrenal glands are stimulated, they immediately respond accordingly and secrete adrenaline.
Epinephrine has a characteristic that when it is secreted in small amounts, it can expand the blood cost, especially the small blood vessels under the skin of the face; However, when a large amount of secretion is distributed, the blood vessels will shrink.
When we feel embarrassed, it is when the cerebral cortex stimulates the adrenal glands and secretes a small amount of adrenaline, so that our faces become hot and red. Not only is it shy that blushes , but when it is happy and angry , it blushes . When you are extremely angry, your face is not only red, but it is red and blue, and sometimes it turns pale, which is because the adrenal glands are secreting a large amount of blood vessels, causing the blood vessels to shrink, alternately congesting and anaemia, or making the blood vessels in an anemic state for a long time.
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The skin is thick, and the blood is not visible when it collects on the cheeks.
Or skin color problems.
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Your personal reasons. Maybe you're not really shy. Nothing.
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This is an inevitable trend of evolution......
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It should have been bold.
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Maybe you don't feel shy.
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Congratulations on practicing to the point where you have perfected the fire, said calmly.
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<> "Why do people blush when they are shy.
There are two kinds of nerves in the human body, one can be freely controlled by one's own will, and the other cannot be controlled by one's own will. Among them, the nerves that cannot be controlled by one's own will are called "autonomic nerves".
When people feel "ashamed."", the parasympathetic nerves begin to work, the blood vessels in the face begin to dilate, and blood flow increases. As a result, the person's face becomes red.
On the contrary, when people are angry or feel fearful, because of the action of the sympathetic nerves, the blood vessels constrict and the flow of blood is reduced. As a result, a person's face becomes iron-blue.
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In winter, the weather is colder, I estimate that you may wear more, suitable for the outside temperature, especially in the classroom, especially in the afternoon, because excessive clothing causes the dilation of capillaries, which is manifested in the face is blushing.
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When you're shy, your mood tends to fluctuate in a state of agitation, your nerves are in a state of excitement, your blood flow is faster, your blood vessels are full of blood....So when you are shy, your face will be red.
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When you are shy, blushing means that the blood circulation is too fast, resulting in a short-term lack of oxygen to the brain, and you are red. Is it the answer?
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One time... Eh, because it's a lunar eclipse.