Thoraco-pulmonary disproportion, scoliosis, kyphosis, frozen spine, dystonia and other muscular disorders, including those of the universal contractile chambers.

A nervous system with muscle to do its bidding elevates the animal above the plant world. Much of what happens in the body, good or bad, involves muscular action. A muscle may underact or quit. It may also overact, even to the point of rupturing. Since muscles come in pairs, a muscular action is a double effect requiring coordination between the mated muscles. Cooperation between paired muscles is sometimes lacking and both muscles contract or relax simultaneously so the desired effect does not happen, or destructive conflict develops which leads to various secondary disorders and chain reactions. Muscles react favorably/unfavorably to whatever stimuli they get.