The chinese believe that energy flows throughthe human body continuously. This is the vital motivating force,which burns like a fuel all through one's life.It is called Qi or Chi or Vital energy. As the energy is used continuouslu in the body,it is also formed continuously by two factors.

1. Intrinsic from digested and assimilated food products inside the body.

2. extinsic - O₂and water taken from the out side.

Energy which is applicable to the human body is called vital energy. In other words Qi which can be manipulated with the acupunture needle is called "JING Qi" or vital energy which circulates in the meridians. Life process is activated and maintained by the energy or Qi the vital force.