In recent years, scientific understanding of low back pain has increased considerably, sometimes shoving concepts thought to be unshakable. If we consider postural hygiene,whose techniques were conceptualized in the 70's and are still widely used, not only some axioms were not confirmed but some evidences suggest that it may sometimes have deleterious effects. After reviewing these elements it appears that there is no simple formula applicable to all patients with low back pain. Instead we offer food for thought so that every therapist can adapt his practice on an individual basis.