My back pain is always lower back and piriformis muscle related. I work 10 to 12 hour days sitting at a computer and I notice it's exacerbated by hiking and moderate cardio exercise. I have started the lessons and am working on Stretchsitting, but am experiencing a lot of pain in both sides of my buttocks around my piriformis muscles which then radiates down my legs. I have had a Herman Miller Mirra chair for years and it was quite expensive so I would like to make it work. http://www.hermanmiller.com/Products/Mirra-Chairs
I am following lesson 1 as best as I can, but I am wondering if you have advice on how to modify the chair and/or my posture to alleviate the pain I am now experiencing while stretchsitting?
Thanks in advance!