It is the man who can stay, who can work at highest efficiency, and who can hold out the longest who is going to be most valuable.

If we save even ten minutes a day in the setting-up exercises, we save, with a hundred thousand men, 16,666 hours daily toward perfecting their other knowledge.

If we can make an able officer or a competent executive last a year longer or even six months under the increased strain, it gives us a year or six months more in which his understudy can gather the necessary experience to take up his task.
[Illustration: ARM AND BODY WORK.

THIS EXERCISE PLACES A HANDICAP ON A HEAVY MAN] [Illustration: ALTERNATE LEG-RAISING] Millions of our youth are going out to fight, but disease and exhaustion will kill more of them than will the guns of the enemy.

Thousands of men of the best brain-power in this country are going into committee-rooms and conferences every day from nine in the morning till twelve at night to devise better and more efficacious means of stopping the progress of the Hun.