A restraint, reposition, traction, and exercise device treats acute or chronic mechanical pain, particularly back, neck, hip, pelvis, shoulder, knees, and/or leg pain, and restores and/or increases range of motion in suitable users. The device may include two or more movable support structures and two or more restraints, such as straps. The restraints may be incrementally adjustable to stabilize two or more portions of a person's body, such as the back and/or pelvic regions, against the support structures in any number of three-dimensional orientations that produce a substantially pain-free position. The support structures may be moved apart to apply spinal traction to the portions of the person's body between the restraints. Exercises may be performed while in a substantially pain-free position before, during, or after spinal traction is applied. The user may reposition and restrain herself/himself in another substantially pain-free position and then re-apply spinal traction and/or perform further exercises.