The history of Chi Kung can be traced back to about five thousand years ago in China. Since there were emperors ruling over the country claiming to be the "Son of the Sky" (a traditional concept that was used to fool the common people, "Sky" in ancient time in China sometimes is equivalent to "God", the emperors wanted the people to believe that they were authorized by "God" to rule over, so listen and obey at all time, no question asked) who loved the power, glory, position and privilege so much that they wanted immortality.
People of knowledge tried very hard to satisfy their emperor. Roughly speaking, there were two groups of people studying this, the first group tended to use medicine, it ended up that eleven emperors in Chinese history have been poisoned to death by this so called "Immortality Medicine". The second group found that the best medicine had been existing in our bodies already, which were born with. Our job is to cultivate it, make it stronger and accumulate it to a certain part of the body and make use of it. People practice this tends to live longer according to statistics but not yet be immortal. This kind of exercises is called "Chi Kung" to-day.
What is Chi Kung?
In China, it is called "Chi", in Japan it is called "Ki", have you ever heard of Aikido? In India, it is called "Purana", ask the Yoka people, In Philippine, it is called "Mana", in Europe, it is called "Aura". There are about 30 names for about the same thing. You see, in human history, not only Chinese struggled to find out the secret of "Chi". Around the world in the past, people sensed that there was something you couldn't see, didn't know what color, how heavy, what smell, closely related to our bodies and lives did exist.
In the Chi-Kung eBook, everything is explained from the point of view of a scientist, so you can understand and handle it easily. Not at all those abstract, fancy, classic, difficult Chinese terminologies. There is a term which is more substantial in the Western World to describe it. You can temporarily put it equal to "bio-electricity" for the time being (actually it is more than that). Our bodies are conductors, electricity can pass through. You know some eel can produce electricity, so do our bodies. But why we don't feel it, the reason is that the electricity we produce is too weak to be detected. But, in some special situation, the famous Chinese scientist, the father of missile of China ---Dr. Chin Hoc Sum called it "The Chi Kung Situation", we can feel it. This e-book teaches us how to practice to set up this Chi Kung Situation so that we can feel this bio-electricity and accumulate it to become stronger and stronger, finally it circulate along the meridians driven by or led by our "Intent ". Kungin Chinese means "exercise" or "function" or "work' sometimes. This means that we have to work for it. We reap what we sow.
Sifu Tommy Cheng is a legendary man who was an actor and action choreographer in Kung Fu movies for about 20 years where he became a close friend of Bruce Lee. Check this: http://www.chi-kung.us/ to know more about Chi-Kung!