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Why do we yawn?

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Why do we yawn?
Zapatian Workers State Offline
Death equals divinity
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Posts: 158
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#15
11-03-2019, 06:27 AM
Contraction of pharyngeal muscles opens the Eustachian tubes which equalize air pressure between the middle ear and the external environment. Subtle differences in air pressure are what cause reflexive spontaneous yawning.
Quote:VAE, PUTO DEUS FIO
- Vespasian, on his deathbed
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Messages In This Thread
Why do we yawn? - by Sulfux - 06-13-2019, 07:00 PM
RE: Why do we yawn? - by Loftegen - 06-13-2019, 08:36 PM
RE: Why do we yawn? - by New Rogernomics - 06-13-2019, 09:55 PM
RE: Why do we yawn? - by Sulfux - 06-14-2019, 11:48 AM
RE: Why do we yawn? - by The Pharcyde - 06-14-2019, 10:55 PM
RE: Why do we yawn? - by Sulfux - 06-16-2019, 08:00 PM
RE: Why do we yawn? - by Loftegen - 06-17-2019, 02:44 AM
RE: Why do we yawn? - by treadwellia - 07-11-2019, 11:42 AM
RE: Why do we yawn? - by Imaginary - 07-16-2019, 12:21 PM
RE: Why do we yawn? - by New Rogernomics - 07-16-2019, 09:11 PM
RE: Why do we yawn? - by Ryccia - 07-17-2019, 08:44 PM
RE: Why do we yawn? - by Debussy - 10-23-2019, 07:37 AM
RE: Why do we yawn? - by Zapatian Workers State - 11-02-2019, 10:54 PM
RE: Why do we yawn? - by Debussy - 11-03-2019, 04:48 AM
RE: Why do we yawn? - by Zapatian Workers State - 11-03-2019, 06:27 AM
RE: Why do we yawn? - by Zapatian Workers State - 11-05-2019, 07:26 AM
RE: Why do we yawn? - by Demonos - 05-09-2020, 05:13 PM
RE: Why do we yawn? - by Al0neForever - 07-22-2020, 03:55 AM

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