 For example, movement that alternates between different awkward sitting postures that repeatedly load the same joints will provide little benefit.The benefits of active sitting are understood to occur with movements through a graded range of centered and symmetrical postures.The active and controlled postural positions in sitting are believed to activate and strengthen muscles in the back and core area, to relieve the static loads acting on joints, ligaments, and tendons, and to promote circulation for elimination of waste products.