Jasper County Democrat, Volume 3, Number 11, Rensselaer, Jasper County, 23 June 1900 — The Act of Yawning. [ARTICLE]

The Act of Yawning.

In bls “Therapeutic Aspects” Dr. H. Campbell says: “There can be little floubt that one of the objects of yawning is the exercise of muscles which have been for a long time quiescent, nnd the acceleration of the blood and lymph flow which has-in consequence >f this quiescence become sluggish. Hence its frequency after one has remained for some time in the same portion—e. g., when waking in the morning. Co-operating with this cause is aleepiness and the shallow breathing which it entails. This factor, as well ts muscle quiescence, is apt to attend the sense of boredom which one experiences in listening to a dull sermon. Hence it is that the bored individual Is xpt to yawn. As in the case of sighing, the dyep breath compensates for the shallow breathing which is so apt to excite It”