Harvard Medical School - "Qigong is good for many medical conditions"

In a  Harvard study, 101 cocaine dependent people were given 4-6 sessions of either Qigong or a sham treatment over a period of two weeks. Those who had practiced Qigong showed a greater reduction in cravings and symptoms of depression. The practice of qigong, through its use of movement, breath work, visualizations and meditation, may be a beneficial addition to both a detoxification regimen and to an overall treatment and relapse prevention strategy.

(Smelson, D, Chen KW, Ziedonis D, et al. A Pilot Study of Qigong for Reducing Cocaine Craving Early in Recovery. The Journal of Alternative and Complementary Medicine. February 2013, 19(2): 97-101.)