Jing, Qi and Shen and how practicing Qigong and Tai Chi relates to them

Here is a link to an excerpt I found on-line from a book called “The Theory of Qigong and Qi”.  I thought you might find reading the excerpt interesting.

http://www.redwingbooks.com/assets/skins/redwing_skin/content/ThePraTaiQig_Exc.pdf