It is just as important to know how to rest as it to know how to eat and exercise. 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 the worn-out parts and so man must relax a certain portion of his life to afford 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 then leaves a vacancy to be filled, and according to Lawsonomy this vacancy 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 reparation 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.