An ancient Chinese tradition that is practiced as a graceful form of exercise involving a series of movements performed in a slow, focused manner and accompanied by deep breathing.  It is a relaxation exercise that encourages muscles to let go of tension, the mind to let go of worry and the heart to let go of angst (Douglas 2005).

Stillness and action are relative, not absolute, principles. It is important to find a balance of yin and yang, not just in qigong, but in everyday life. In movement, seek stillness and rest. In rest, be mindful and attentive.
— Ken Cohen