Eat when the stomach, through the instinct of appetite, demands a new supply of food. If all your habits are regular, this will be at about the same hours each day; and regularity in the time of taking our meals is very important. Want of attention to this point is a frequent cause of derangement of the digestive organs. We can not stop to discuss the question how many meals per day we should eat; but whether you eat one, two, or three, never, under ordinary circumstances, take lunches. The habit of eating between meals is a most pernicious one. Not even your children must be indulged in it, as you value their health, comfort, and good behavior.
3. How Much to Eat.
We can not tell you, by weight or measure, how much to eat, the right quantity depending much upon age, sex, occupation, season, and climate, but the quantity is quite as important as the quality. Appetite would be a sure guide in both respects were it not so often perverted and diseased. As a general rule, we eat too much. It is better to err in the other direction. An uncomfortable feeling of fullness, or of dullness and stupor after a meal is a sure sign of over-eating, so whatever and whenever you eat, eat slowly, masticate your food well, and DO NOT EAT TOO MUCH.
4. Drink.
If we eat proper food, and in proper quantity, we are seldom thirsty. Inordinate thirst indicates a feverish state of either the stomach or the general system. It is pretty sure to follow a too hearty meal.
Water is the proper drink for everybody and for every thing that lives or grows. It should be pure and soft. Many diseases arise wholly from the use of unwholesome water. If you drink tea (which we do not recommend), let it be the best of black tea, and not strong. Coffee, if drunk at all, should be diluted with twice its quantity of boiled milk, and well sweetened with white sugar.
IV.—BREATHING.
Breathing is as necessary as eating. If we cease to breathe, our bodies cease to live. If we only half breathe, as is often the case, we only half live. The human system requires a constant supply of oxygen to keep up the vital processes which closely resemble combustion, of which oxygen is the prime supporter. If the supply is insufficient, the fire of life wanes. The healthy condition of the lungs also requires that they be completely expanded by the air inhaled. The imperfect breathing of many persons fails to accomplish the required inflation, and the lungs become diseased for want of their natural action. Full, deep breathing and pure air are as essential to health, happiness, and the right performance of our duties, whether individual, political, or social, as pure food and temperate habits of eating and drinking are. Attend, then, to the lungs as well as the stomach. Breathe good air. Have all your rooms, and especially your sleeping apartment well ventilated. The air which has been vitiated by breathing or by the action of fire, which abstracts the oxygen and supplies its place with carbonic acid gas, is a subtle poison.
V.—EXERCISE.
The amount of physical exercise required varies with age, sex, and temperament; but no person can enjoy vigorous health without a considerable degree of active bodily exertion. Four or five hours per day spent in the open air, in some labor or amusement which calls for the exercise of the muscles of the body, is probably no more than a proper average. We can live with less—that is, for a short time; but Nature's laws are inexorable, and we can not escape the penalty affixed to their violation. Those whose occupations are sedentary should seek amusements which require the exertion of the physical powers, and should spend as much as possible of their leisure time in the open air. We must, however, use good judgment in this matter as well as in eating. Too much exercise at once, or that which is fitful and violent, is often exceedingly injurious to those whose occupations have accustomed them to little physical exertion of any kind.