Hi GVI,
I just found out about it today and my take on it is that it is complementary to tai chi practice, as a sort of conditioning exercise but not in quite the same way that, for example, running while carrying weights on your wrists or ankles is a conditioning exercise.
Dan gives an interesting link on
zhan zhuang. My translation of the literal meaning would be "post/stake standing." Different martial arts, different traditions in those arts, and different teachers within those traditions will have their own understanding of its importance and how to do it best. This is actually not that different than the varying views about how best to the main Tai Chi bare-hand forms.
In the Association's Tai Chi, we are taught that Tai Chi practice consists of still and moving practice. Since this is a Yin-Yang relationship, we might also say "relatively still" and "relatively moving" practice. At the most still end of the spectrum is probably "meditation" while lying down. At the most moving end of the spectrum is probably sparring or
fajin practice. We are advised to do both types of practice to balance out our training.
As for
zhan zhuang, it is a practice we strongly encourage. Our basic practice is to do it in a relatively high stance, working up to sessions that are at least twenty minutes long. We consider that this practice normally has both internal and external benefits; but if you do it while talking or watching television, you will get only the external benefits, such as stronger legs.
What you do during the practice is focus on the Ten Essentials, especially on those aspects that deal with sinking
qi to the
dantian. I think different people experience different sensations. For me, I feel my energy smoothing out and the
qi sinking deeply. My upper body gets light. For everyone, you should have a feeling of getting in touch with the fundamental mind, body, and energy configurations that underly all of our movement.
One way to practice is to do
zhan zhuang just before doing the form. In that way, you can carry all the aspects of good posture, sunken
qi, still focused mind, and body control into your moving practice. One major challenge in doing form is not to let the movements have an undue effect on your “natural” breathing. If you do the standing correctly, you begin to feel that even slight problems with balance or with the alignment of your lower back, for instance, affect your breathing. You can take these feelings and learnings into how you do the form.
I hope this helps.
Take care,
Audi