Qi Gong/ Chi Kung is a practice similar to Tai Chi but easier to learn and highly effective to increase energy, reduce stress, and promote healing.
Qi gong is a combination of deep breathing, stretching, moving exercises, and holding postures. It is a moving meditation as much as it is a physical exercise.
This is a general introduction to to the concept of qigong and how it can help you. It is based on the concepts of Traditional Chinese Medicine and acupuncture and has been practiced for centuries.
It is a little bit of a long video but it is part of the the new Qi Gong routine found here