GOOD HEALTH 



CHAPTER I 



BREATHING AND PURE AIR 



Go and watch the baby when he is asleep. See how 

 his chest rises and falls, then rises and falls again. 



He does not know what he is doing, but he breathes 

 as perfectly as the oldest and the wisest man in the 

 world. He began to breathe when he was born, and he 

 will not stop until he dies ; still he does it without think- 

 ing about it. 



There is a special kind of machinery in each of us 

 that takes care of our breathing even when we are 

 asleep. Nobody has to be clever or old or good to 

 know how to breathe, though each of us can stop our 

 breathing if we care to try. 



See how long you can hold your breath and be 

 comfortable. 



In some places men dive in the ocean for pearls. They 

 pick up the shells that hold the pearls, and the longer 

 they stay under water the more pearls they can find. 

 For this reason they hold their breath as long as they 



