In the morning the body is rested through sleep; at night it is tired; during the day it is at work. In getting ready to work in the morning it needs an energy-supply that is not so heavy as to burden the body with food-care instead of providing it with food-help. Food that will somewhat spare tissue, and digestion-foods, are also morning food-needs.

For those not at hard physical work the noon food-need is for some sustaining energy food that will be easily digested, though not entirely used over-quickly; also slight building and refreshing food. At night the adult body needs repair, some energy food that will be readily digested; also some laxative food, but no highly stimulating food. For children's needs, see pp. 202-205.

It is usual to consider \ the daily food the dinner-amount and 1/4 each the breakfast and luncheon. Meat is advised not more than once a day. Red meat (beef, etc.) should alternate with white (chicken, etc.) or other non-stimulating animal food (eggs, etc.). At noon vegetable building food is suitable, for then the starch combined with it has an opportunity to digest before sleep and furnish sustaining energy for the latter part of the waking day. As 1/2 the building food should be animal and 1/2 vegetable, this gives an opportunity to arrange it so.

The quantities of food desirable and the differences in child-and adult-diet will be considered later. It is said a man at hard work and a child over 2 years cannot be overfed; that food enough is their need. But the child is to be built much for growth and needs much energy for exercise, as growth depends upon exercise too. The child is, however, only learning to eat. The man has learned and is grown. He needs great energy and much repair - energy-food that lasts and food that spares as well as repairs tissue. Therefore though a child of 2 years and over and a laborer both need much food, yet they need different food (pp. 189-203).