Subject: What causes yawning in humans?
Date: Wed Jun 16 10:36:04 1999
Posted by Nadeem
Grade level: 7-9
School: M.M.High School
City: Calicut State/Province: Kerala
Country: India
Area of science: Neuroscience
ID: 929547364.Ns
Message:
Even when not tired or sleepy, I sometimes yawn. What may be the
physiology of yawning?
Re: What causes yawning in humans?
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