BREATHING 367 



fortable feeling of being " winded. " After a little we 

 get used to it, and thus get our " second wind. 77 



Deep breathing wards off colds and many diseases 

 of the lungs and other organs. 



All persons who breathe through the mouth, or have 

 a tendency to do so, should be examined for growths 

 (adenoids) which stop up the passage of the nose and 

 throat, and so hinder breathing. The removal of such 

 growths sometimes transforms a dull boy into a bright 

 one, for without a good air supply both, vital and 

 mental processes are slow and sluggish. 



Importance of pure air. Out-of-door air is the only 

 pure air, and we should spend every minute possible 

 in the open air. Sleep in the open air if possible; next 

 best is sleeping with the head partly out of the window 

 when it is not too cold. This has cured many a con- 

 sumptive. At least have some windows in the bed- 

 room open. The cold air does no harm, but only good, 

 so long as only the head is exposed to it: exposure 

 of the body to cold draughts is dangerous. 



Every schoolroom, church, theater, or public hall 

 should be ventilated by means of fans and blowers 

 which send currents of air (of the proper temperature) 

 through it. Furnace heat for homes is far better than 

 steam or hot water, because it provides a constant 

 supply of fresh air, which should be filtered through 

 cloth as it comes into the furnace. There should be 

 some place for the air to escape, and for this purpose a 



