But to every man, the proper exercise of the body is an important object, as good health and spirits constitute the greatest blessing of nature, for our pleasures are derived from the capability of enjoying them. Dr. Churchill justly remarks[14], “that, in the formation of our frames, and the very nature of our constitution, it was the positive institution of Providence, to create in us an absolute necessity for exercise, in order to our well-being.” And he farther says, that “by attention to exercise, the tone and vigour of the moving powers are wonderfully increased; the nervous energy and circulation of the blood are materially accelerated; and this increased impetus of the blood through the whole system produces an effectual determination to the surface of the skin; and free perspiration is the consequence. By the same means, the body is disposed to sleep; the appetite increased; the tone of the stomach and digestive powers preserved; and the blood is determined from the internal viscera, which prevents as well as removes obstructions, and powerfully obviates the tendency to a plethoric fulness of the system. By exercise, the spirits are enlivened, and the body refreshed; or, as Hippocrates observes, it gives strength to the body, and vigour to the mind; and it is an irrefragable truth, that where it is improperly neglected, the energy and strength of the whole machine falls to decay.” To the authority of Dr. Churchill, may be added that of the celebrated Dr. Willich, who, in the Seventh Chapter of his Lectures on Diet and Regimen, (p. 441-2,) observes, that “motion, or bodily exercise, is necessary to the preservation of health, which is promoted, while the bounds of moderation are not exceeded. Too violent exercise, or a total want of it, are attended with equal disadvantages. Much also depends on the kind of motion, and the various postures of the body. “The essential advantages of exercise are the following: Bodily strength is increased; the circulation of the blood and all other fluids promoted; the necessary secretions and excretions are duly performed; the whole mass of the blood is cleared and refined, so that it cannot stagnate in the minutest capillary vessels; and if any obstruction should begin to take place, it will thus be effectually removed. “That exercise is enjoined by Nature, we may learn from the whole structure of the human body; the number of muscles formed for motion; and the mechanism in the circulation of the blood itself. There are indeed no healthier people than those who take strong daily exercise. Man in a state of health is instinctively excited to muscular exertion; and children that are perfectly healthy, are constantly running about, and in almost uninterrupted motion.” * * * * *