A systematic review found that manipulative therapy to improve fluidity between soft tissue layers, which often become denser and stiffer with age and injury, can improve pain and disability in patients with musculoskeletal pains. Doctors of chiropractic are trained to provide several forms of manual therapy, including fascial manipulation, in the treatment of back pain, neck pain, and other musculoskeletal conditions. Journal of Bodywork Movement Therapies, January 2021