Why is temperate zone the most suitable for human survival?

Where is the most densely populated area on earth? Temperate zone, of course. Think about all the populous countries in the world: China, the United States, Europe, Japan ... Other areas are either too cold or too hot, which is not suitable for human survival at all.

Temperate zone is characterized by four distinct seasons, warm spring, hot summer, cool autumn and cold winter. In the long process of evolution, human beings have adapted to this climate feature, so Chinese medicine stresses four seasons. In fact, our bodies are no different from deciduous trees on the roadside. In spring, there are buds on the trees, and a new life has just begun. After a winter's dormancy, the yang in our body begins to sprout in spring. In summer, the trees grow very luxuriantly, and all the branches are trying to spread out. At this time, the yang in our body also grows to the most vigorous time, focusing on the outside to fight against the hot weather; In autumn, the leaves began to wither, and our yang began to slowly return to the body and converge; In winter, when the cold weather comes, the nutrients on the trees are hidden in the roots, and the yang of the human body is hidden inside to resist the cold. This is the law of "birth, growth, harvest and storage" of human yang all year round, which corresponds to the climate characteristics.

The operating characteristics of human yang also determine our living habits. In spring, we should go to bed late and get up early to help yang grow. Don't always sleep, otherwise the yang will not increase. The more we sleep, the less energy we have. In summer, the yang is all outside, and the inside of the human body is relatively empty. Eating melons and fruits is easy to have diarrhea, so summer is the high season of gastrointestinal diseases, so we must pay attention to it in diet; The main climate feature in autumn is "dryness", and the body is often in a state of water shortage. You must replenish more water and eat more pears and apples. Winter is a good time to replenish your body. Women can use some blood-enriching things such as donkey-hide gelatin, jujube, walnut kernel, rock sugar and yellow wine, while men can use some kidney-tonifying things such as Liuwei Dihuang Pill and Jinkui Shenqi Pill.

The temperate zone has four distinct seasons, which used to be very good. Now people make the indoor temperature very high in winter, and some even reach 28 or 29 degrees. They are not cold in vest T-shirts, but in summer, the air conditioner is fully open and the indoor temperature is only a dozen degrees. Everyone feels cold, whether it is cold or not, whether it is hot or not, which goes against the nature of the body and is easy to get sick.

So in rural areas, many long-lived old people live in bungalows, which are warm in winter and cool in summer. These old people have a strong smell and can live a long life. They also use a relatively primitive big cattail fan to cool down, so that the wind blown out is natural and won't hurt the body. But many people like to use air conditioners to cool down, and the wind from air conditioners is biting cold. They may think it is not strong when they are young, but they can't stand it when they are old. "Fake evil thief wind, sometimes avoid it", the hot wind in winter and the cold wind in summer are different from the seasonal wind, that is, thief wind, which is particularly harmful to health.

In a word, man is a part of nature, and our life activities should conform to nature. Since I was born in the temperate zone, I should try my best to adapt to the characteristics of this zone, and don't always want to change it. I don't want to be cold when it is hot, and I don't want to be hot when it is cold, otherwise my health will be hard. In fact, people always overestimate their abilities and hope to change nature, but it is human beings who are ultimately punished.