More food is needed in cold weather than warm; more by those of large stature than small; more by men than women; more by adults than children; more by adults in full vigor than the aged; more by those that do hard manual labor than those that do moderate manual work; more by those that do moderate manual work than those that do sedentary or desk work.

Amounts of food needed under different conditions compared with that required by a man at moderate muscular work.

Hard Labor

Moderate Work

Sedentary Activity

Man

1 1/5

1

4/5

Woman

1

4/5

7/10

Old age, 9/10 - Extreme old age, 7/10 -4/5

15-16 Years

13-14 Years

12 Years

Boys

9/10

4

7/10

Girls

4/5

7/10

3/5

10-11 Years

6-9 Years

2-5 Years

Child

3/5

1 2

2/5

Infant under 2 years, - 3/10

(Write the above proportions as decimals) Food-quantities in Daily-Diet, p. 222

The amounts of food needed by a man at different work decrease by 1/5; by a boy at different ages increase by 1/10.

How do these change for women, girls, children, the aged ?

Not simply the total quantities of food needed by adults and children differ, but also the amounts of the different food-constituents. (See p. 203).

For kinds and amounts of food suitable for children at different ages, see pp. 202-203.

What occupations are heavy manual labor in city and country? Which are moderate? Which light or sedentary?