Hi again,
I wanted to clearify something here. I regetted bringing in possibility of a kidney deficiency. Something more to 'think' about!
Your focus should just be the practice. The practice moves you in a way that simply, takes care of things.
In very general terms, you could look at where your focus is, in your practice. I speak in relation to the three dan tiens. If you are having a physical issue, focusing more, on the lower dan tien helps. The active exercises focus there. The meditations can. Everytime you start a meditation, if you are doing it more with a CD, you can stay longer in the lower dan tien, focusing there with your breathing in of energy, before say, you start a specific meditation process. Also closing, staying with your focus there longer, at the end of a process, say like small universe.
Any sensations or side effects, are just that. Part of a healing and opening process. You can be at a place of that seemingly going on for a long time. Just stay in the present, do your qigong, and see or know a side effect as a 'healing' result, not a lingering problem. Change, perhaps if it is the case, how you see this chill. A good chill that is something touched and opening/healing, as opposed to a limitiation or something not working.
Again, me saying that you possibly have a kidney deficiency is something I now regret saying! I made a mistake in doing that. It is irrelevant. That kind of information can be a limitation for you. My apologies. Just do your practice, focus on level one active as a tool for physical transformation. It works. It doesn't matter what is going on, keep your mind on the given focus and process. Reign in any other thinking! Physical body / lower dan tien.
love,
gallen