In the field of health care, there are also many statements and statements about health care. These classic sentences are teaching people how to keep healthy in daily life. One of them is called lying on your back. It can be called a wise saying that everyone scolds you, and it is also an important sentence for health preservation. The so-called can keep back, can't keep life.
The word supine here refers to the posture we usually sleep in. Some people like to lie on their backs, some people like to lie on their sides, and some people like to sleep on their stomachs. In fact, the most correct of these postures is lying on the side, which side should we lie on, and the most correct sleeping position should be lying on the right side. If you lie on your left side, it will only oppress our hearts, make it difficult for us to breathe and cause chest tightness. Sleeping on your back is harmful to our breathing and cervical spine.
As for everyone scolding Zhang's crotch, we can understand the meaning of this sentence. Swearing refers to sitting with your legs apart, which is a very unsightly sitting posture. In ancient times, people paid attention to the rules of sitting instead of sitting and standing instead of sitting, which was great. If you sit with your legs apart, it is not only impolite, but also appears that you are uneducated and do not conform to the way of keeping in good health. That's why people scold this sentence.