Why do people get goose bumps? Answer: In very ancient times, human beings had hair all over their bodies. When it's cold, sweat pores shrink and make hair stand on end. In this way, the hair of the whole body becomes loose, soft and thick, which enhances the warm-keeping effect. Although modern people have almost no hair, this function has always been preserved.

Why do you cry when you cut onions? A: After the eyes are stimulated, in order to reduce the harmful substances to the eyes.

When injured, the lacrimal gland accelerates the secretion of tears to clean the toxin.

Why do joints sometimes break suddenly? Answer: the joint fluid in the joint cavity becomes thinner and the ligament becomes loose, so,

When you exercise, your joints will suddenly break.

Why do you cry with joy? Answer: When people are extremely happy and extremely sad, the human meridians are particularly sensitive, so you can

It is involuntary to vent your previous and present feelings of depression, but it is good for your health.

Sometimes you laugh until your stomach hurts? Answer: People's laughter is caused by the rhythmic contraction of diaphragm abdominal muscles, but this contraction

Too much can cause stomachache.

Why do eyelids jump? Answer: The eyes are in rhythmic spasm due to fatigue, which leads to eyelid jumping.

Why do some people always feel cold? Answer: cold constitution, yang deficiency, should supplement yang qi, eat more hot food, more

Exercise.

Why does the person feel numb? A: The blood vessels are not smooth. Take more exercise.

Why do you see a halo around the headlights when driving at night? Answer: It is generally a normal phenomenon, obviously not with others.

Please go to the hospital for examination.

Is the baby born without freckles? A: The baby's blood circulation is particularly smooth, and toxic waste will be eliminated in time.

Not freckles, of course.