Abstract: A handgrip member and back reference bar are part of an improved apparatus for aiding conditioning of muscles in th head and neck, the shoulder girdle and the pelvic girdle to position those body parts in relation to a centerline or gravity line through an erect individual to improve the posture of the individual through an erect spinal column. With the improved apparatus, certain key muscles and various body manipulations are used in conditioning an erect spinal column and in conditioning advantageous muscle control prevalent in a cross-crawl movement by the method of the invention.