What is the reason why the ancestors said that they don't sit on stones in winter and trees in summer?

Nowadays, people pay great attention to health care, and weather change is also a major standard of health care. As the saying goes, "Don't sit on a stone in winter and a tree in summer" has certain scientific basis. Most of the words of the older generation are reasonable, and I would rather believe what is not credible. Today I will talk about the principle.

We don't sit on rocks in winter, because it is very cold and the temperature is very low. Foreign objects will get cold. Although the stone looks hard, it restrains the cold, so we usually feel cold when sitting on it. Sitting for a long time, the cold on the stone will penetrate into your body. If cold air seeps into the body, it is easy to hurt the kidneys and reproductive organs, especially women. Some women have a bad cold, causing dysmenorrhea and even more serious infertility. So don't just sit on the rocks, especially in winter. Originally the temperature was low and the chill was heavy. If you don't pay attention and don't let moisture and cold enter the body, the problem will be very serious.

In summer, it looks very hot, but there is a lot of moisture in the air, and those wooden chairs that have been left for a long time have more moisture because of the dew, although the surface is dry after the sun. But in fact, it is easier to emit moisture in the sun. If people sit on wooden chairs for a long time, it is easy to cause diarrhea and indigestion. Not only that, but also easy to induce hemorrhoids, skin diseases, rheumatism, arthritis and so on. Look, small moves may affect your health.

In fact, it doesn't mean winter and summer, but it's best not to sit for a long time at any time. If you are simply tired and want to have a rest, it is ok, but don't expect to sit in a chair for a long time to rest or sleep, so your health will lose more than you gain.