Many have suffered from severe mental taxation, unrelieved by physical exercise. The result is a deterioration of their powers, and they are inclined to shun responsibilities. What they need is more active labor. This condition is not confined to those whose heads are white with the frost of time; men young in years have fallen into the same state, and have become mentally feeble.

Strictly temperate habits, combined with exercise of the muscles as well as of the mind, will preserve both mental and physical vigor, and give power of endurance to those engaged in the ministry, to editors, and to all others whose habits are sedentary.

Ministers, teachers, and students do not become as intelligent as they should in regard to the necessity of physical exercise in the open air. They neglect this duty, a duty which is most essential to the preservation of health. They closely apply their minds to study, and yet eat the allowance of a laboring man. Under such habits, some grow corpulent, because the system is clogged. Others become thin and feeble, because their vital powers are exhausted in throwing off the excess of food. The liver is burdened, being unable to throw off the impurities of the blood, and sickness is the result. If physical exercise were combined with mental exertion, the circulation of the blood would be quickened, the action of the heart would be more perfect, impure matter would be thrown off, and new life and vigor would be felt in every part of the body.

When the minds of ministers, school teachers, and students are continually excited by study, and the body is allowed to be inactive, the nerves of emotion are taxed, while the nerves of motion are inactive. The wear being wholly on the mental organs, they become overworked and enfeebled, while the muscles lose their vigor for want of employment. There is no inclination to exercise the muscles in physical labor; exertion seems to be irksome.1

Many feel that if they do not eat meat and the grosser articles of food, they may eat of simple food until they cannot well eat more. This is a mistake. Many professed health reformers are nothing less than gluttons. They lay upon the digestive organs so great a burden that the vitality of the system is exhausted in the effort to dispose of it. It also has a depressing influence upon the intellect; for the brain nerve power is called upon to assist the stomach in its work. Overeating, even of the simplest food, benumbs the sensitive nerves of the brain, and weakens its vitality. Overeating has a worse effect upon the system than overworking; the energies of the soul are more effectually prostrated by intemperate eating than by intemperate working.

The digestive organs should never be burdened with a quantity or quality of food which it will tax the system to appropriate. All that is taken into the stomach, above what the system can use to convert into good blood, clogs the machinery; for it cannot be made into either flesh or blood, and its presence burdens the liver, and produces a morbid condition of the system. The stomach is overworked in its efforts to dispose of it, and then there is a sense of languor, which is interpreted to mean hunger, and without allowing the digestive organs time to rest from their severe labor, to recruit their energies, another immoderate amount is taken into the stomach, to set the weary machinery again in motion. The system receives less nourishment from too great a quantity of food, even of the right quality, than from a moderate quantity taken at regular periods.2

Overeating, even of the simplest food, benumbs the sensitive nerves of the brain, and weakens its vitality. Overeating has a worse effect upon the system than overworking; the energies of the soul are more effectually prostrated by intemperate eating than by intemperate working. The digestive organs should never be burdened with the quantity or quality of food which it will tax the system to appropriate. All that is taken into the stomach, above what the system can use to convert into good blood, clogs the machinery; for it cannot be made into either flesh or blood, and its presence burdens the liver, and produces a morbid condition of the system.3

Overeating is intemperance just as surely as is liquor drinking. And what influence does overeating have upon the stomach?—It becomes debilitated, the digestive organs are weakened, and disease, with all its train of evils, is brought on as the result. If persons were diseased before, they thus increase the difficulties upon them, and lessen their vitality every day they live. They call their vital powers into unnecessary action to take care of the food that they place in their stomachs. What a terrible condition is this to be in!4

Another pernicious habit is that of eating just before bedtime. The regular meals may have been taken; but because there is a sense of faintness, more food is taken. By indulgence this wrong practice becomes a habit and often so firmly fixed that it is thought impossible to sleep without food. As a result of eating late suppers, the digestive process is continued through the sleeping hours. But though the stomach works constantly, its work is not properly accomplished. The sleep is often disturbed with unpleasant dreams, and in the morning the person awakes unrefreshed and with little relish for breakfast. When we lie down to rest, the stomach should have its work all done, that it, as well as the other organs of the body, may enjoy rest. For persons of sedentary habits late suppers are particularly harmful. With them the disturbance created is often the beginning of disease that ends in death.5

If your work is sedentary, take exercise every day, and at each meal eat only two or three kinds of simple food, taking no more of these than will satisfy the demands of hunger.6

God wants men to cultivate force of character. Those who are merely timeservers are not the ones who will receive a rich reward by and by. He wants those who labor in His cause to be men of keen feeling and quick perception. They should be temperate in eating; rich and luxurious food should find no place upon their tables; and when the brain is constantly taxed, and there is a lack of physical exercise, they should eat sparingly, even of plain food. Daniel’s clearness of mind and firmness of purpose, his strength of intellect in acquiring knowledge, were due in a great degree to the plainness of his diet, in connection with his life of prayer.7