FOOD 125 



5. For a child from twelve to fourteen years (women, light 



work also) .................. 2100 Calories. 



6. For a boy twelve to fourteen years, girl fifteen to six- 



teen, and man of sedentary habits ........ 2400 



7. For a boy fifteen to sixteen, man light muscular work 2400 



8. For a man at moderately active muscular work . . . 2700 



9. For a farmer, busy season ......... 3200 to 4000 



10. For ditchers, excavators, etc ......... 4000 to 5000 



11. For lumbermen ................. 5000 



84. Bodily Heat Output. Some experiments have 

 been conducted to determine the amount of heat which 

 escapes from the body every hour. The following table 

 will give some idea of the average escape of heat from 

 the normal body while asleep, awake, at work, or at 

 rest:- 



AVERAGE OUTPUT OF HEAT FROM THE BODY 

 Condition of Muscular Activities 



Average Calories 

 per hour 



Man at rest sleeping ................. 65 



Man at rest awake, sitting up ............. 100 



Man at light muscular exercise ............. 1 70 



Man at moderately active muscular exercise ....... 290 



Man at severe muscular exercise ............ 450 



Man at very severe muscular exercise ......... 600 



In order to determine how much heat is given out by 

 a man, all you have to do is to calculate the number of 

 calories given out for the hours spent in the various 

 kinds of activities during the twenty-four hours. For 

 example: Suppose we take a man working at moderate 

 labor, who 



Sleeps for nine hours ......... 9 X 65 calories 585 calories. 



Works for eight hours ......... 8x290 " 2320 " 



Reading and at rest at home seven hours. 7 X 100 " 700 " 



The following table will give some idea of the relative 

 amounts of the nutrients in the various kinds of bread 



