If the man who has eight or ten hours of busy brain work in-doors daily, and who, when his duties are ended, has no heart for physical exercise, would, every hour or two, turn aside from his work, and take even two minutes’ vigorous exercise, in his office or in the adjoining hallway, he would return to his labor with brain considerably refreshed, and at the close of the day, he would enter upon his half hour’s walk with spirit and alacrity, and welcome his sleep at the end of the day. =Business Men.=--Who does not know, among his business acquaintances, men whose faces show that they are continually overworked? They have no time for systematic physical exercise, but go dragging through their duties as well as their low physical condition and tired brains will permit. The noonday lunch is bolted, or is omitted entirely, for want of time. Dr. S. Weir Mitchell, a specialist in nervous disorders, speaks of the numerous instances of nervous exhaustion among merchants and manufacturers. He says: “My note books seem to show that manufacturers and certain classes of railway officials are the most liable to suffer from neural exhaustion. Next to these come merchants in general, brokers, etc.; then, less frequently, clergymen; still less often, lawyers; and, more rarely, doctors; while distressing cases are apt to occur among the over-schooled young of both sexes.” Few business or professional men do anything to secure and preserve health and strength, and they go through life far less efficient and useful than they might be. Pre-eminent business success can be achieved only by turning over to subordinates the numerous details which occupy so much time, and which any trustworthy and experienced secretary or assistant might do. By this arrangement, time would be saved for necessary recreation and rest, thus keeping the physical systems of the employers and managers in the best possible condition, and securing to the mind that alertness and vigor which the sharp competition of the times demands. =Professional Men.=--Looking over a list of eminent divines, it is surprising how many of them were men of rugged frames and sturdy physique. It required a man with the physical vigor of Luther to declare he would attend the Diet of Worms “though the devils there were as numerous as the tiles on the houses.” How much of the success of Spurgeon, and Beecher, and Dr. John Hall may be fairly ascribed to their splendid outfit of vital organs, and to the glowing health which each enjoyed. Nor were Phillips Brooks, and Joseph Cook, and Dwight L. Moody lacking in these physical qualities which count for so much in influencing the minds and hearts of men. These knew nothing of “blue Mondays” or “ministers’ sore throat,” and needed not to be sent abroad by their congregations, every summer or two, in order to recruit their health, and keep them up to their work.