hard. Over-exertion will sometimes cause a strain on the 
delicate machinery of the body that will be very serious in after life. 
The heart is especially subject to the dangers of overstrain in growing 
boys. We are not all equally strong, and it is no discredit to a boy that 
he cannot run as far or lift as much as some of his playmates or 
companions. You all remember the fable of the frog who tried to make 
himself as big as the ox and finally burst. The idea of exercise is not to 
try to excel every one in what you do, but to do your best without 
over-exertion. If a boy has a rugged frame and well developed muscles, 
it is perfectly natural that he should be superior in most sports to a boy 
that is delicate or undersized. 
To be in good physical condition and to laugh at the doctor we must 
keep out of doors as much as possible. Gymnasium work of course will 
help us to build up our strength and develop our muscles, but skill in 
various acrobatics and gymnastic tricks does not give the clear eye and 
ruddy cheek of the person whose life is in the open air. Outdoor sports, 
like tennis, baseball, and horseback riding are far superior to 
chestweights or Indian clubs as a means of obtaining normal permanent 
development. 
Parents who criticize school or college athletics often forget that the 
observance of the strict rules of training required from every member of 
a team is the very best way to keep a boy healthy in mind and body. 
Tobacco and alcohol are absolutely prohibited, the kind of food eaten 
and the hours for retiring are compulsory, and a boy is taught not only 
to train his muscles but to discipline his mind. Before a candidate is 
allowed to take active part in the sport for which he is training he must 
be "in condition," as it is called. 
There are a great many rules of health that will help any one to keep 
well, but the best rule of all is to live a common-sense life and not to
think too much about ourselves. Systematic exercises taken daily with 
setting up motions are very good unless we allow them to become 
irksome. All indoor exercise should be practised with as much fresh air 
in the room as possible. It is an excellent plan to face an open window 
if we practise morning and evening gymnastics. 
There are many exercises that can be performed with no apparatus 
whatever. In all exercises we should practise deep regular breathing 
until it becomes a habit with us. Most people acquire a faulty habit of 
breathing and only use a small part of their total lung capacity. Learn to 
take deep breaths while in the fresh air. After a while it will become a 
habit. 
Just how much muscle a boy should have will depend upon his physical 
make-up. The gymnasium director in one of our largest colleges, who 
has spent his whole life in exercise, is a small, slender man whose 
muscles are not at all prominent and yet they are like steel wires. He 
has made a life-long study of himself and has developed every muscle 
in his body. From his appearance he would not be considered a strong 
man and yet some of the younger athletes weighing fifty pounds more 
than he, have, in wrestling and feats of strength, found that the man 
with the largest muscles is not always the best man. 
There is one question that every growing boy will have to look squarely 
in the face and to decide for himself. It is the question of smoking. 
There is absolutely no question but that smoking is injurious for any 
one, and in the case of boys who are not yet fully grown positively 
dangerous. Ask any cigarette smoker you know and he will tell you not 
to smoke. If you ask him why he does not take his own advice he will 
possibly explain how the habit has fastened its grip on him, just as the 
slimy tentacles of some devil fish will wind themselves about a victim 
struggling in the water, until he is no longer able to escape. A boy may 
begin to smoke in a spirit of fun or possibly because he thinks it is 
manly, but more often it is because the "other fellers" are trying it too. 
My teacher once gave our school an object lesson in habits which is 
worth repeating. He called one of the boys to the platform and wound a 
tiny piece of thread around the boy's wrists. He then told him to break it,
which the boy did very easily. The teacher continued to wind more 
thread until he had    
    
		
	
	
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