I've been in physio for a while now. I have a trapped nerve in the top of my neck, which effects everything south of my first vertebrae, mostly on the left side: muscle tension, pins and needles in arms and legs, random jolts of pain and sciatica type symptoms. Ive managed to keep up with most of my training in other arts well. Karate gives me no hassle, shuai jiao only gives me very mild pain in my lower back and Im even fine weight lifting, running and swimming. What I have found odd is that ginga aggrivates my lower back a lot. I'm quite weak in my lower back due to excess tension. I was wondering if anyone had any ideas on how i could free that off?