Yawning and airway physiology: a scoping review and novel hypothesis | SpringerLink
What is it about yawning?
How to Stop a Yawn: 10 Best Ways
Open wide: why yawning reveals much about your level of empathy | Life and style | The Guardian
Women are twice as likely to yawn as men - this is why - Mirror Online
Why do we yawn? | New Scientist
Yawning Caused by Anxiety
Why do we yawn? Scientists are still searching for the answer
What Is A Yawn? - YouTube
Why Do We Yawn? - The New York Times
Yawns Are Cool · Frontiers for Young Minds
Is it Normal to Yawn Excessively? | WR Mattress
Why Do We Yawn When We're Sleepy? Everything You Should Know
Simple Ways to Stop Yawning when Singing: 11 Steps (with Pictures)
Why we yawn and What it means
Why Is Yawning Contagious? | Mental Floss
Why Do We Yawn? - YouTube
Why do we yawn and is it really contagious? | NationalWorld
Yawn - Wikipedia
What is it about yawning?
A simple slice of science - Why do we yawn? - Dr. How's Science Wows
Why do we yawn? | Library of Congress
The Word That Makes 55% of People Yawn When They Read It | Reader's Digest
Yawning: An unsolved mystery
