88 PHYSIOLOGY AND HEALTH. 



stimulation who have the greatest activity, and whose exer- 

 cise opens the freest outlet for their nervous energies. On 

 the other hand, the habitually indolent and inactive, whose 

 nervous energies are not freely expended, do not bear stimu- 

 lation easily, because they have less outlet for the quickened 

 flow of vitality. The laborious and the active should eat 

 more stimulating food than the sedentary and the idle. 

 Farmers, sailors, masons, carpenters, and out-of-door labor- 

 ers, want more meat ; while students, tailors, shoemakers, 

 and house-employed women, want more bread. The former 

 thrive best upon beef, mutton, and bread ; while the others, 

 when they add meat to their vegetable food, do well with 

 chickens, fowl, turkeys, and fish. 



189. Disorders of the stomach arise from neglect of this 

 caution. While men are engaged in hard labor abroad 

 they have good appetite and vigorous digestion, and very 

 properly eat stimulating food ; but if they leave their la- 

 borious occupations, and become jewellers, shoemakers, 

 scholars, or merchants, or engage in any light employment, 

 their lives, from being the most laborious and active, become 

 quiet and often sedentary. They have less change in their 

 vital particles, and, of course, less nutritive want and di- 

 gestive power. 



190. If, now, these men do not change their diet with 

 their habits of exercise, their digestive powers begin to falter, 

 and then they feel oppressed after eating. They eat with less 

 satisfaction, and do not have the sensations of ease and 

 comfort after their meals. They are dull, and disinclined 

 to go to their usual employments, or their books, or their 

 accounts. 



191. When one exchanges a light for a laborious occupa- 

 tion, he increases his expenditure of particles, and conse- 

 quently the demands for nutrition. His stomach gradually 

 gains power, and his appetite craves more food to meet the 

 new habit of life. A hard student at Westford Academy, 

 in 1822, became dyspeptic and feeble. He had little appe- 



