“It is just as important to know how to rest as it is to Know how to eat and exercise right.

“Exercise develops power which uses up fuel and wears away the machinery of man. Nourishment replaces the fuel and the materials for repairing the machinery. Time is needed by the inhabitants of the billions of tiny cells of man to rebuild his worn-out parts.

“So man must relax a portion of the time for the building work to be done or the body would become so dilapidated, from the wearing away of the machinery without repair, that he would collapse altogether in a short time.

“Plenty of rest, therefore, must be constantly taken to offset the exercise.

“When exercise is taken, a contraction movement is produced, in which pressure uses up for power the available supply of vitality and then squeezes out of the body the waste matter, which leaves a vacancy that is filled by the Suction movement whereby food is drawn into the stomach and air into the lungs for the purpose.

“Food and air thus drawn into the system must not only be given a chance to digest, and be stored up for more power, but time must also be allowed for its distribution and reformation of the cells and tissues in all parts of the body.

“In proportion to the quantity of vitality used up and forced out of man by pressure during activity, so an equal quantity must be drawn back again by suction if he is to remain at a certain physical standard.

“It is the resting period that allows time for drawing into the system new substances, storing them away and building up new manlife by suction. Rest is necessary in order that the internal work of the body may be attended to, which could not be done if man used all of his time expending his vitality for either muscular or mental exercise.

“Frequent periods of rest for both muscles and mind are more strengthening than the taking of long stretches of time for work and rest. The heart of man is able to work twenty-four hours a day because it takes a short rest between each beat.

“The heart beats approximately seventy times a minute. With each beat it works three-tenths of a second and rests four-tenths of a second. The time required for the SHIFT between REST and WORK is about three-tenths of a second after each beat. Therefore, the heart takes more time for rest than it does for work. At that rate the heart rests approximately eleven hours each day and man requires the same quantity of time for rest each day that his heart consumes.

“The resting periods of the entire body, of course, cannot be as often as the beating of the heart, but man will balance himself better and increase his efficiency and length of life if he will shorten his periods of work and rest.

“Man who works with brain or brawn must rest at least five minutes every hour he is awake to produce the best results.

“Man who works his brain exclusively must take besides five minutes rest, five minutes of muscular exercise every hour he is awake.

“Man who works his muscular system exclusively must take besides the five minutes rest, five minutes of constructive thinking every hour he is awake.

“Eleven hours’ rest can be distributed to good advantage each day as follows: Eight hours for sound sleep. One-half hour after breakfast, one-half hour after lunch, one hour after the larger evening meal, five minutes relaxation during each hour of the remaining wakeful hours.

“If factory owners would divide up the day into more periods of work and rest their employees would not only be benefited by better health and longer life, but the employer would also be benefited by larger production results as well, owing to the often revitalized employees working with renewed and increased power and ambition between time.

“The time will come when the economic life of man will no longer be his master and slave driver, and the distorter and destroyer of his body and mind. His work will be so regulated that he will not be shorn of all his vitality before he has reached his greatest capacity. And after he has reached his greatest capacity for usefulness it will be found better to conserve his power for a long period by plenty of restful spells interspersed during work hours than by draining the last drop of his vitality for a short period and sending him to an early grave before his greatest output is attainable.

“All functions of man must harmonize or the machine will be thrown out of balance. The farther away from balance the less efficient man becomes. Upon the pivot of manlife there must be balanced the three cardinal principles-Exercise-Nourishment-Rest.”