Yawn! It’s More Interesting Than It Sounds

I have read or heard of a variety of explanations as to why we yawn:

  1. Tired
  2. Bored
  3. Need a stretch
  4. Need oxygen
  5. Need to cool the brain
  6. Need power (make everyone who sees you yawn do it too!)
  7. Nervousness
  8. Changes in the chemicals (neurotransmitters) in the brain that affect emotions, mood, appetite, and other phenomena.
  9. Health issues such as adrenal issues, diabetes & stroke
  10. Could be a herd instinct that synchronizes mood in gregarious animals. 

Photo by William Stewart

For me right now, I know it’s reason #1.  G’nite!
(Do tell, did you yawn too?)



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