Qigong is an ancient Chinese exercise that is literally translated as "breathing exercise." Qi is "life force," which essentially means breath. Gong means work or cultivation, hence Qigong is working with and cultivating the breath or life force. References to this art can be found as far back as we can trace the history of the Chinese culture. Qigong is core to the foundation of Chinese medicine, Chinese martial arts, and Chinese meditation. It is still widely practiced today,its longevity being one of its strongest endorsements.

For more information Please refer to Jane's essay:  
Qigong- The Power of Intention