I noticed your photo of the Parthanon, and I wondered if you went to Athens in 2002?
Regarding your question, I practice a couple of qigong exercises to help create jing. These exercises stimulate the lower back and lower abdomen. One is called "Bear Walking" I learned from Yan Gaofei in Hollywood, FL, several years ago. The other is a part of Wudang Shen Quan Qigong set that I learned from Chris Turner in Northern CA also several years ago.
After the building jing exercises, I practice Kong Jing I learned from Guo Bingsen. I subsequently found the same Kong Jing videos as part of the Chinese National Chi Kung Institute Tien Tao Chi Kung Correspondence Program (which is excellent). See http://www.scribd.com/doc/127330598/The-Complete-Qi-Gong-Course-Tien-Tao-Chi-Gung on the internet. I also add some other qigong exercises I learned from time to time.
With best regards,