Back pain.Because the original is sitting at nanklam back from shoulder blade and shoulder muscles 2 sides of the spine will have to shrink, so that in the original at any time.
Back pain due to sitting in the same position for a long time, but the muscle behind the shoulder blades were two sides of the spine, muscles are contracted in order to stay in the same position all the time.
Back pain.Due to sit in the same position for a long time back muscles since the scapula and shoulder muscles 2 side ของกระดูกสันหลัง have contracted in order to stay in the same position all the time.