Contrology is not a system of haphazard exercises designed to produce only bulging muscles. ... Nor does Contrology err either by over-developed a few muscles at the expense of all others with resulting loss of grace and suppleness, or a sacrifice of the heart or lungs. Rather, it was conceived to limber and stretch muscles and ligaments so that your body will be as supple as that of a cat and not muscular like that of the body of a brewery-truck horse, or the muscle-bound body of the professional weight lifter you so much admire at the circus.