God hath not given us the spirit of fear; but of power, and of love, and of a sound mind. 2 Timothy 1:7.

We are God’s workmanship, and His Word declares that we are “fearfully and wonderfully made.” He has prepared this living habitation for the mind; it is “curiously wrought,” a temple which the Lord Himself has fitted up for the indwelling of His Holy Spirit. The mind controls the whole man. All our actions, good or bad, have their source in the mind. It is the mind that worships God and allies us to heavenly beings. Yet many spend all their lives without becoming intelligent in regard to the casket [the human body] that contains this treasure.—Child Guidance, 360.

All the physical organs are the servants of the mind, and the nerves are the messengers that transmit its orders to every part of the body, guiding the motions of the living machinery. Exercise is an important aid to physical development. It quickens the circulation of the blood, and gives tone to the system. If the muscles are allowed to remain unused, it will soon be apparent that the blood does not sufficiently nourish them. Instead of increasing in size and strength, they will lose their firmness and elasticity, and become soft and weak. Inactivity is not the law the Lord has established in the human body. The harmonious action of all the parts—brain, bone, and muscle—is necessary to the full and healthful development of the entire human organism….

The appetites and passions must be controlled, that through them we shall not weaken or defile God’s human temple.

Anything that lessens the physical power enfeebles the mind, and makes it less clear to discriminate between good and evil, between right and wrong. This principle is illustrated in the case of Nadab and Abihu. God gave them a most sacred work to perform, permitting them to come near to Himself in their appointed service; but they had a habit of drinking wine, and they entered upon the holy service in the sanctuary with confused minds.

There was the sacred fire, which was kindled by God Himself; but they used the common fire upon their censers, when they offered incense to ascend as a sweet fragrance with the prayers of God’s people. Because their minds were clouded by an unholy indulgence, they disregarded the divine requirement; “and there went out fire from the Lord, and devoured them.” …

It is the duty of each student, of each individual, to do all in his power to present his body to Christ, a cleansed temple, physically perfect as well as morally free from defilement—a fit abode for God’s indwelling presence.—Fundamentals of Christian Education, 426-428.

From Reflecting Christ

Whatsoever thy hand findeth to do, do it with thy might; for there is no work, nor device, nor knowledge, nor wisdom, in the grave, whither thou goest. Ecclesiastes 9:10.

The various trades and occupations have to be learned, and they call into exercise a great variety of mental and physical capabilities; the occupations requiring sedentary habits are the most dangerous, for they take men away from the open air and sunshine, and train one set of faculties, while other organs are becoming weak from inaction. Men carry on their work, perfect their business, and soon lie down in the grave.

Much more favorable is the condition of one whose occupation keeps him in the open air, exercising his muscles, while the brain is equally taxed, and all the organs have the privilege of doing their work. To those who can live outside of the cities, and labor in the open air, beholding the works of the great Master Artist, new scenes are continually unfolding. As they make the book of nature their study, a softening, subduing influence comes over them; for they realize that God’s care is over all, from the glorious sun in the heavens to the little brown sparrow or the tiniest insect that has life.

The Majesty of heaven has pointed us to these things of God’s creation as an evidence of His love. He who fashioned the flowers has said: “Consider the lilies of the field, how they grow; they toil not, neither do they spin: and yet I say unto you, that even Solomon in all his glory was not arrayed like one of these.” … The Lord is our teacher, and under His instruction we may learn the most precious lessons from nature.

The world is under the curse of sin, and yet even in its decay it is very beautiful. If it were not defiled by the wicked, corrupt deeds of the men who tread the soil, we could, with the blessing of God, enjoy our world as it is. But ignorance, pleasure loving, and sinful habits, corrupting soul, body, and spirit, make the world full of moral leprosy; a deadly moral malaria is destroying thousands and tens of thousands. What shall be done to save our youth? We can do little, but God lives and reigns, and He can do much….

While we shun the false and artificial, discarding horse racing, card playing, lotteries, prize fights, liquor drinking, and tobacco using, we must supply sources of pleasure that are pure and noble and elevating. We should choose a location … where the eye will not rest continually upon the dwellings of men, but upon the works of God; where there shall be places of interest for them to visit, other than what the city affords. Let [them] be placed where nature can speak to the senses, and in her voice they may hear the voice of God. Let them be where they can look upon His wondrous works, and through nature behold her Creator.—Fundamentals of Christian Education, 319, 320.

From Reflecting Christ

The glory of young men is their strength. Proverbs 20:29.

Attention to health is one of our most important duties. We owe this to ourselves, to society, and to God. Young men and young women are proverbially careless in regard to their health….

Exercise is indispensable to the health of every organ. If one set of muscles is used to the neglect of others, the living machinery is not being worked intelligently.

When physical exercise is taken, the circulation is quickened. The heart receives blood faster and sends it to the lungs faster. The lungs work more vigorously, furnishing a greater amount of blood, which is sent with stronger power through the entire being. Exercise gives new life and strength to every part of the body.

The nerves gain or lose strength in accordance with the way in which they are treated. If used too long and too severely, they are overtaxed and weakened. If used properly, they gain strength.

In order to have health, equilibrium of action must be maintained. The mind must harmonize with this…. If physical exercise is regarded as drudgery, if the mind takes no interest in the exercise of the different parts of the body [the benefits will not be realized]. The mind must be interested in exercise of the muscles.

In the education of the youth, physical exercise must be combined with mental taxation.—Letter 6, 1885.

Perfect obedience to God’s commands calls for conformity to the laws of the being….

The time spent in physical exercise is not lost. The student who is constantly poring over his books, while he takes but little exercise in the open air, does himself an injury. A proportionate exercise of the various organs and faculties of the body is essential to the best work of each. When the brain is constantly taxed while the other organs are left inactive, there is a loss of physical and mental strength. The physical powers are robbed of their healthy tone, the mind loses its freshness and vigor, and a morbid excitability is the result.

In order for men and women to have well-balanced minds, all the powers of the being should be called into use and developed….

[The Lord] bids us reason from cause to effect, to remember that we are His property, and to unite with Him in keeping the body pure and healthy, and the whole being sanctified to Him.—Counsels to Parents and Teachers, 295-300.

From Reflecting Christ

And every man that striveth for the mastery is temperate in all things. 1 Corinthians 9:25.

It rests with us individually to decide whether our lives shall be controlled by the mind or by the body. The youth must, each for himself, make the choice that shapes his life; and no pains should be spared that he may understand the forces with which he has to deal, and the influences which mold character and destiny.

Intemperance is a foe against which all need to be guarded. The rapid increase of this terrible evil should arouse every lover of his race to warfare against it.—Education, 202.

The observance of temperance and regularity in all things has a wonderful power. It will do more than circumstances or natural endowments in promoting that sweetness and serenity of disposition which count so much in smoothing life’s pathway. At the same time the power of self-control thus acquired will be found one of the most valuable of equipments for grappling successfully with the stern duties and realities that await every human being.

Wisdom’s “ways are ways of pleasantness, and all her paths are peace” (Proverbs 3:17). Let every youth in our land, with the possibilities before him of a destiny higher than that of crowned kings, ponder the lesson conveyed in the words of the wise man, “Blessed art thou, O land, when … thy princes eat in due season, for strength, and not for drunkenness!” (Ecclesiastes 10:17).—Education, 206.

“Let thine heart keep my commandments,” God says; “for length of days, and years of life, and peace, shall they add to thee.” “They are life unto those that find them, and health to all their flesh.” “Pleasant words,” the Scriptures declare to be not only “sweet to the soul,” but “health to the bones” (Proverbs 3:1, 2, margin; 4:22; 16:24).

The youth need to understand the deep truth underlying the Bible statement that with God “is the fountain of life” (Psalm 36:9). Not only is He the originator of all, but He is the life of everything that lives. It is His life that we receive in the sunshine, in the pure, sweet air, in the food which builds up our bodies and sustains our strength. It is by His life that we exist, hour by hour, moment by moment. Except as perverted by sin, all His gifts tend to life, to health and joy.

“He hath made every thing beautiful in its time” (Ecclesiastes 3:11, R.V.); and true beauty will be secured, not in marring God’s work, but in coming into harmony with the laws of Him who created all things, and who finds pleasure in their beauty and perfection.—Education, 197, 198.

From Reflecting Christ

Beloved, I wish above all things that thou mayest prosper and be in health, even as thy soul prospereth. 3 John 2.

The things of nature are God’s blessings, provided to give health to body, mind, and soul. They are given to the well to keep them well and to the sick to make them well. Connected with water treatment, they are more effective in restoring health than all the drug medication in the world.

In the country the sick find many things to call their attention away from themselves and their sufferings. Everywhere they can look upon and enjoy the beautiful things of nature—the flowers, the fields, the fruit trees laden with their rich treasure, the forest trees casting their grateful shade, and the hills and valleys with their varied verdure and many forms of life.

And not only are they entertained by these surroundings, but at the same time they learn most precious spiritual lessons. Surrounded by the wonderful works of God, their minds are lifted from the things that are seen to the things that are unseen. The beauty of nature leads them to think of the matchless charms of the earth made new, where there will be nothing to mar the loveliness, nothing to taint or destroy, nothing to cause disease or death.

Nature is God’s physician. The pure air, the glad sunshine, the beautiful flowers and trees, the orchards and vineyards, and outdoor exercise amid these surroundings, are health-giving—the elixir of life. Outdoor life is the only medicine that many invalids need. Its influence is powerful to heal sickness caused by fashionable life, a life that weakens and destroys the physical, mental, and spiritual powers.

How grateful to weary invalids accustomed to city life, the glare of many lights, and the noise of the streets are the quiet and freedom of the country! How eagerly do they turn to the scenes of nature! How glad would they be for the advantages of a sanitarium in the country, where they could sit in the open air, rejoice in the sunshine, and breathe the fragrance of tree and flower! There are life-giving properties in the balsam of the pine, in the fragrance of the cedar and the fir. And there are other trees that are health-promoting. Let no such trees be ruthlessly cut down. Cherish them where they are abundant, and plant more where there are but few….

Nothing so tends to restore health and happiness as living amid attractive country surroundings…. May God help us to do our utmost to utilize the life-giving power of sunshine and fresh air.—Testimonies for the Church 7:76-79.

From Reflecting Christ