Why is it hot but cold?

The human body has a self-regulating system, which will automatically keep the body temperature normal. Because the temperature in summer is higher than the human body temperature, Chi's body takes away the heat in the body through a lot of sweating, thus keeping the body temperature normal. Because of the temperature difference between the air and the body, it feels as if the body is very cold, but actually it is measured by a thermometer, which is the same as the body temperature in winter.

This is the same reason that the water in the well is cold in summer and hot in winter. In fact, the temperature of well water is always the same. It's just that the temperature is very low in winter, which is lower than the water temperature, so I feel that the water is hot. On the contrary, the temperature is very high in summer, which is higher than the water temperature, so it feels cold.

When the human body is in strenuous exercise, it will consume a lot of energy in the body and release a lot of heat, so that the temperature of the human body will rise, and at the same time, with the acceleration of heartbeat, blood circulation and breathing. In order to maintain the physiological stability of the human body, the body will release heat through perspiration, thus lowering the body temperature. Because the direct energy source ATP and indirect energy source creatine phosphate have been basically exhausted, it is difficult for the body to continue to release heat through this energy source to maintain body temperature, and it will make the body feel cold, reduce immunity and easily catch a cold.

With the improvement of living standards, there are fewer people with deficiency of qi and yang, but due to the accelerated pace of life, people's mental stress has increased, nightlife has become increasingly rich, and there are more people with deficiency of yin.

People can be divided into yin and yang. Yang refers to the function of the body, while Yin refers to the body fluid, including blood, saliva, tears, semen, endocrine and oil secretion. "People with yin deficiency will show insufficient vaginal fluid, and people with yin deficiency will be in a state of water shortage, resulting in dry eyes, dry nose, dry mouth, rough skin and dry hair."

Yin deficiency is caused by congenital genetic factors, but improper living habits can also cause Yin deficiency. Young and middle-aged people are under great pressure from work and family, and their physical strength and energy are obviously overdrawn, which is very likely to lead to autonomic nervous disorder. If they don't pay attention to invigorating qi in daily life, they will be favored by yin deficiency, leading to night sweats, dull skin, insomnia and dreaminess.