Show BAD AIR LEADS TO YAWNING G GLack Lack of Sufficient Oxygen Games Causes On Onto one Ons oneto to Open the and Take Deep Breath When you yuu yawn you jou ou do sn so because you jou ou have not been breathing quite proper properly and ancl for Cor some reason or orI I other your jour our blood supply has not been getting sufficient oxygen through theair the theair air nil which has hns been taken Into your o r lung lungs Natures Nature's way In this In Instance Instance In In- stance Is K to call for Cor a It big Intake 0 of all air nil all at ut one time and since It Is at such times that u II large quantity of pf air should be supplied to the lun lungs s at nt once nature has hns so o arranged mutters matters that certain muscles shall cause you to open your our o mouth wide nn and take In as much air as you youcan youcan youcan can at nt one time and has arranged ld so th that it It Is almost Imp impossible Impossible s' s sible to keep from ya yawning when hen the demand for Cor It Is once made The Theyan yu yawn ya wn Is controlled b by a n part of our nerve ner structure which looks after atter the br breathing apparatus The satisfaction n we feel after a wholesome yawn awn Is due to the fact tact that having replied to natures nature's demand that we bring In more air our blood secures the oxygen which It needs and we feel the effect of better blood In our arteries at once A peculiar thing about the process of yawning is that one person In a n room yawning I will quite likely set allor allor nIlor all nIl or nearly all an the others to yawning also There seems to be no explanation explanation nation of ot this excepting that when hen a number of ot people are arc in one room and one of them begins to yawn th the the others do so not because they perceive pere per the first yawn awn so much as the probable fact that the air all in the room has become so poor that there is not enough good air for all the people in it It breathing normally and many of them are arc forced to yawn at about the same time Book Book of Wonders Wonder |