If your spine is inflexibly stiff at 30, you are old. IF it is completely flexible at 60, you are young.
Joseph PilatesPhysical fitness is the first requisite of happiness. Our interpretation of physical fitness is the attainment and maintenance of a uniformly developed body with a sound mind fully capable of naturally, easily, and satisfactorily performing our many and varied daily tasks with spontaneous zest and pleasure.
Joseph Pilates