Qi Gong is a technique of using energy to heal the body. It works on the same scientific principle as acupuncture and is often used alongside it to prolong the benefit of the treatment. Some people call it a moving meditation; others describe it as a Chinese yoga. The Shaolin Temple define it as a science of the mind and body, and it is a practice they have time tested for more than one thousand five hundred years.
There are thousands of different forms but the most important one in the Shaolin Temple is called Yi Yin Jing (Muscle/Tendon changing classic) and Xi Sui Jing (Bone Marrow cleansing classic).
In the past the teaching methods of these Qi Gong forms, were passed down secretly to only a very few Shaolin disciples in each generation. The Yi Yin Jing and Xi Sui Jing taught the monks how to use Qi to clean the bone marrow and strengthen the blood and immune system, as well as how to energize the brain, which helped them to attain Buddhahood.
The Eight Treasures (sometimes called Eight Pieces of Brocade and in Chinese Ba Duan Yin) comes from these books and is possibly the most popular Qi Gong in the world. It consists of a series of gentle movements designed to dramatically improve health, increase energy and revitalize the body.