【健康冷知識】為甚麼打呵欠後聽力會變好

醫藥健康

有發覺打了一個超大的呵欠後聽力會變好?難道是超能力?來看看這超能力是怎樣形成的!

在正常情況下,耳咽管是閉合的。打呵欠時,喉嚨內的喉頭會下降,導致耳咽管張開,讓中耳的氣壓與外界保持一致,耳咽管周圍的肌肉會放鬆,耳咽管會更加通暢,進而改善聽力。

打呵欠時,嘴巴張開,允許空氣進入耳道,降低耳道內的壓力,進而改善聽力。

不過,打呵欠後聽力變好的效果只是暫時的,隨著耳咽管再次閉合,聽力也會恢復原狀,超能力也隨之而消失了。



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