I have seen some posts on other forums talking about back pain with the diet. I really don't know if this is related to their problem, but I thought someone may benefit from this info if they are having these problems. The treadmill can cause back pain if running or walking on an incline. I have suffered from this and I had a friend from work that also was having back problems until I told him what was probably causing it. Within a week his back was better. Maybe you can tolerate using the incline option (which many of the preset programs use), but if back pain starts it may be a good idea to go back to a flat run or walk. I was having lots of back trouble before I found this information on a fitness site. Maybe this will help someone.
