[todd8]

I currently work at an adjustable height table. I really like standing for about four hours each day while I work. I lower the table to sit whenever I get too tired of standing. For sitting, I use a strange stool-like chair with a spring mounted seat. It's called a Swopper chair and it's available on Amazon. At first this chair with no back tired me out. It prevents the kind of relaxed slumping that I always found myself doing before and keeps core muscles engaged. After a couple of months of using it I find it very comfortable, and I noticed the same pattern when I started to work standing up. This change in my work habits is associated with less frequent lower back problems (which have been developing for decades), but I'm not sure that's its the chair or the standing as much as not sitting the same way for 10 hours every day. Back when I was a long distance runner, I found that alternating shoes from different manufacturers on each day's run helped avoid overuse injuries.