I have attempted to practice the art of circulating CHI/Qigong. What I really needed was a teacher...a master to guide me. I believe it is a real energy. Upon attempting it one late night, I could not help but feel negative energy even a dark presence around me.

Ive read Brian Grey book on Iron Palm. In one chapter he told a story about a monk who was circulating the dragon's breath (Chi). He did it incorrectly and was found one morning in a his meditation pose, dead, with burst capillaries. 

I had an interest in using the physical and not spiritual (Chi, Qigong) , bought some Dit da jow herbs to speed up the healing and trained my hands,wrist, and arm for constant impact. I did not have the discipline to continue long.

Nonetheless Oriental medicines do work.