Everyone knows the common method of health preservation-meridian health preservation. Meridian is the general name of meridian, with "Jing" as the main part and "Collateral" as a branch of "Jing". Meridian is the system that the human body runs the whole body's qi and blood and connects the viscera and organs, and it is an important part of the human body structure. Simply put, meridians are the external manifestations of internal diseases of the body.

Practical Health Care Technology is a book devoted to applying ancient meridian health care methods to real life. If we want to stay healthy, we must first understand our own bodies. Many diseases are caused by meridian obstruction. There are usually two reasons why meridians are blocked: first, meridians contract when they are cold, which is the same principle as people often say that heat expands and cold contracts. Second, excessive accumulation of endotoxin and dirt in the body leads to blockage of meridians.

Only by understanding the reasons for the obstruction of meridians can we keep healthy scientifically according to the conditioning methods introduced in Yang Kang Practical Technology.