Physical 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 PilatesIt is better to be tired from physical exertion than to be fatigued by the 'poisons' generated by nervousness while lying awake.
Joseph Pilates