THE MUSCLES 143 



when out for a walk in the park, would often run if there 

 was no one in sight. Philip D. Armour, many times a 

 millionaire, walked to his office while his clerks took the 

 street car. 



245. Over-development of Muscles. As important as 

 muscular exercise is for sending the blood bounding through 

 tha veins and renewing the health of every part, exercise 

 can be overdone. Some athletes develop great, heavy mus- 

 cles which are a burden to the vital organs to support. 

 They do not take care to develop their lungs and breathing 

 powers in proportion. Such athletes die young. Among 

 those who have succumbed to consumption may be men- 

 tioned Kehoe, the famous club swinger ; Dowd, the teacher 

 of physical culture; "Jap," the wrestler ; Winship, the 

 inventor of the health lift ; Kennedy, the strong man ; and 

 Peter Jackson, the pugilist ( 238). Complete living with 

 conditions of health and activity for all the organs, without 

 extreme use of any of them, is most conducive to a long 

 and healthful life. 



PROBLEMS AND QUESTIONS FOR REVIEW 



1. In what part of the body are most of the involuntary muscles 

 situated? 



2. Name a muscle which is wholly involuntary. 



3. Can you name any muscle which is wholly voluntary under all 

 circumstances? To which class do the muscles that lift the eyelids 

 belong? 



4. Which muscle, anatomically, belongs strictly to neither class? 



5. If a man had absolute control over his muscles of respiration, 

 what might he do that he cannot now do? 



6. Can the muscles act independently of the will in walking? 



7. Do we shiver with the voluntary or involuntary muscles? Is 

 trembling usually involuntary? 



8. How many movable bones are there in the face? Name muscles 

 attached to a movable bone of the face. 



9. What purpose do most of the muscles of the face serve? 



10. Why is one who uses alcoholic drinks not likely to be a good 

 marksman? 



