 Chronic low back pain is a common condition that can negatively impact quality of life and that lacks highly effective treatment options. The YMCA developed different iterations of a stretching exercise program as a community based treatment for low back pain from 1974-2004. Though anecdotally successful, the YMCA stretching exercise programs was not scientifically evaluated for efficacy and became obsolete. The purpose of the study is to test the efficacy of a previously popular YMCA stretching exercise programs for back pain. The stretching exercise program that will be studied is a collection of all the resources available for the YMCA stretching exercise programs. The most recent criteria from a National Institutes of Health sponsored Task Force to study chronic low back pain were applied to this study. 