In the ancient energetic practices as well and in Chinese traditional medicine, we often see the term "Qi" used to describe the vital force to give birth to reality, life, and health. Even as the term is quiete ancient, it has been used on different circles during the centuries and it does have so different meanings in different contexts. It is something that cannot be seen, but can be perceived and operated upon in order to modify our own reality. We can operate on it with external practices like acupuncture, or with internal practices like Qigong or Taichi.