Those fibers which are healthy in the spinal cord strengthen, in one way or another, the weak fibers. The means of strengthening them is the same electric current which operates within the cells of the brain. If the distribution of these strong fibers is even and balanced, then a person’s chest becomes firm and strong. If there is no uniformity in the distribution, then the ribs of the chest come under pressure, remain weak and soft. For this reason, sometimes such persons are seen who are hunchbacked. If this condition is a disease, then it is almost incurable. If it is not congenital, then through extremely careful treatment it becomes corrected.