258 THE HUMAN BODY. 



the blood from the abdominal organs where it ought to be 

 at that time. Young persons, whose organs have a super- 

 abundance of energy enabling them to work under unfavor- 

 able conditions, are less apt to suffer in such ways than 

 their elders. One sees boys running actively about after 

 eating, when older people feel a desire to sit quiet and ru- 

 minate or even to go to sleep. 



