Yawning doesn't catch on in babies › News in Science (ABC Science)
Is yawning a tool for wakefulness or for sleep?
The Word That Makes 55% of People Yawn When They Read It | Reader's Digest
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Why we yawn and What it means
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Yawning and airway physiology: a scoping review and novel hypothesis | SpringerLink
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4 Things Your Yawns Are Trying To Tell You | Prevention
Why Do We Yawn + Are Yawns Really Contagious? - Casper Blog
Yawning: An unsolved mystery
Yawn - Wikipedia
Why is yawning contagious? Your tired tick, explained.
Why Do We Yawn When We're Sleepy? Everything You Should Know
What Is Yawning? | SiOWfa15: Science in Our World: Certainty and Controversy
A simple slice of science - Why do we yawn? - Dr. How's Science Wows
Simple Ways to Stop Yawning when Singing: 11 Steps (with Pictures)
What happens in the brain to make us 'catch' yawns - BBC News
