Between the ladies and gentlemen given to these healthy and invigorating exercises, and those who neglect them and wear their flesh loosely upon their bones, there is as much difference, and to the prejudice of the latter, as there is between day and night. The one class moves with head erect and expanded chest, while the pavement rings beneath its heel and the flush of health suffuses its cheek; the other, with mincing step, sallow cheek, contracted chest and lack-luster eye, picks its way along, as best it can; and, when fatigued in any degree, throws itself into an easy chair to languish many a weary hour away. This is no overdrawn picture, as a 3 o'clock saunter through any of our fashionable squares or thoroughfares will verify. But sad as the case is in this one relation, there is a remedy for it if it be taken in time; and that is, a judicious course of physical training and exercise, as much as possible in the open air; gentle and with but little exertion at first, but gradually leading up to that glorious and matchless point, where the patient, now a totally new being, revels in feats of strength and agility that he or she formerly supposed to be unattainable on the part of either. In order to insure perfect health, the body ought to be sponged with cold water daily, the various muscles should be exercised for a short period, and submitted to the action or tension proper to them, whether in running, lifting, striking, stretching or posturing. The chest should be expanded by the use of dumb-bells; and the muscles of the arms strengthened by the use of clubs or the trapeze--which latter is of general utility, inasmuch as it can be brought to bear upon nearly all the muscles. The lungs, also, must be distended to their fullest capacity, by frequent gulps of pure, fresh air; while the chest, during the time they remain inflated, must be gently beaten with the palms of the open hand, so that the air may find its way into the minutest of the cells. If this system of training were observed with any degree of intelligence and regularity its beneficial results would be felt almost instantly, and even in the case of the weak or suffering, who would, at first, be obliged, of course, to indulge in but homoeopathic doses of this regime, until they became accustomed to it, and began to delight in all its fascinating phases. Physical strength or beauty without physical health being an impossibility, we can perceive how necessary it is to establish, restore or preserve the latter, as the case may be; and as this cannot be effected if the muscular system is not adequate to all the reasonable demands upon it, we cannot fail to apprehend the vital importance of keeping it in a state of the highest efficiency. But while attempting to accomplish this latter we must remember that to overtax either it or the nervous system would be to frustrate the object had in view, and to almost make the cure as bad as the disease.