Why is Yawning Contagious?
Article Sources
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- 2. Carey, Teresa. 'Why Are Yawns Contagious? We Asked a Scientist.' PBS, Public Broadcasting Service, 17 July 2018, www.pbs.org/newshour/science/why-are-yawns-contagious-we-asked-a-scientist#:~:text=What is known is that,imitate the actions of others
- 3. AC;, Massen JJ;Dusch K;Eldakar OT;Gallup. 'A Thermal Window for Yawning in Humans: Yawning as a Brain Cooling Mechanism.' Physiology & Behavior, U.S. National Library of Medicine, pubmed.ncbi.nlm.nih.gov/24721675/
- 4. Norscia, Ivan, et al. 'Auditory Contagious Yawning Is Highest Between Friends and Family Members: Support to the Emotional Bias Hypothesis.' Frontiers in Psychology, Frontiers Media S.A., 3 Apr. 2020, www.ncbi.nlm.nih.gov/pmc/articles/PMC7147458/
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- 6. Featured Neuroscience Psychology, May 22, 2018, et al. 'Why Do We Yawn and Why Is Yawning So Contagious?' Neuroscience News, 22 May 2018, neurosciencenews.com/yawning-contagious-9112/
- 7. St. Louis Public Radio | By Eli Chen. 'Contagious Yawning, Laughing and Scratching Gives Clues to How the Human Brain Works.' St. Louis Public Radio, 27 Mar. 2017, news.stlpublicradio.org/health-science-environment/2017-03-25/contagious-yawning-laughing-and-scratching-gives-clues-to-how-the-human-brain-works
- 8. 'Yawning: Causes and Reasons for Contagious Yawning.' Medical News Today, MediLexicon International, www.medicalnewstoday.com/articles/318414#Can-one-yawn-too-much
Can a Person Yawn Too Much?
Yawning is a normal behavior that typically doesn't cause any problems. However, it's possible to yawn too much. A rapid drop in blood pressure and heart rate called a vasovagal reaction also causes yawning. Yawning excessively may also be a symptom of several disorders.
Too much yawning can signify a sleep disorder, such as sleep apnea, a heart condition or a brain disorder. For example, excessive yawning may be related to certain heart defects and can even be a sign of a heart attack.8‘Yawning: Causes and Reasons for Contagious Yawning.’ Medical News Today, MediLexicon International, www.medicalnewstoday.com/articles/318414#Can-one-yawn-too-much
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