What is a yawn?
A yawn is to open the mouth somewhat involuntarily with a prolonged, deep inhalation and sighing, as from drowsiness or boredom.
Answered by Walter H. -
Older Answers
A Yawn is an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom. ChaCha on!
Answered by John P. -
A yawn is a reflex of simultaneous inhalation of air and stretching of the eardrums, followed by exhalation of breath.
Answered -
A yawn is an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom. ChaCha away!
Answered by Krista P. -
A yawn is an involuntary opening of the mouth, often caused by suggestion.If you have any more questions just send them to ChaCha!
Answered by LATASHA C. -
Yawning is an involuntary action that causes us to open our mouths wide and breathe deeply. Did you know 11-wk fetuses can yawn?!
Answered by Karin G. -
When people are bored or tired, they breathe more slowly. As breathing slows down, less oxygen makes it to the lungs.. MORE?
Answered by Tyler W. -
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