Professor Andrew Gallup featured in 'What’s yawning for – and is it really contagious?'
![Dr. Andrew Gallup](/sites/default/files/styles/news_full/public/2023-07/gallup800x680-4909-72.jpg?itok=S-GQ3iOx)
The Sydney Morning Herald
"Gallup says yawning has a unique physical function: cooling the brain. In warm-blooded organisms, the brain is always undergoing small fluctuations as the body maintains a constant core temperature. When the brain’s temperature rises, Gallup proposes, a yawn is one mechanism that flushes warmer blood away from the skull and introduces a cooler supply..."
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