I have chronic spinal issues as related to scoliosis. I had spinal fusion over 20 years ago, but I continue to experience abnormal pelvic rotation, which culminates in migraines. Back Joy has reduced these abnormal rotations by more than 90% in a given week. I use my Back Joy primarily at the office where I do must of my sitting. It has been instrumental in helping me to stop the horrible habit of crossing my legs. I feel steadier in my chair due to the Back Joy, therefore I don’t cross my legs reflexively to feel "secure." I love my Back Joy so much, I bought a second one to keep in my car. ..More