To understand qigong, we need to understand 'qi' and 'qi channels.' Ancient Chinese wisdom holds that qi or 'life energy' is the most basic substance in the universe. All phenomena are the result of the movement and change in qi.
Although there is no precise modern Western definition of qi, in the West it is often referred to as bio-electricity or human electricity. The energy of the human body is the foundation of our health and life. When we have a lot of energy, our immune system works at full strength. Without energy we die.
The qi channels (meridians) can best be described as internal and external pathways, along which the energy moves. The main qi channels are found with the blood vessels and the nerves. According to Traditional Chinese Medicine, there are 12 main qi channels, which can be thought of as the qi circuits. There are also 8 extra vessels, which are the human body's energy reservoirs.
During qigong, qi is gathered from around us and circulated through the body. We achieve this by performing specific exercises targeting specific channels, associated with specific organs. Through Quiet Qigong we learn to move qi by intent. One of the main aims of Quiet Qigong is the movement of qi along the channels to the (Lower) DanTian centre, where the energy is stored.
As long as we have sufficient qi moving smoothly through our bodies, we enjoy good health. However, when our energy becomes blocked, discomfort and illness may result. Medical research shows that Qigong is able to not only treat illness but also improve vitality.