Why Do We Yawn and Why Are Yawns Contagious?

An average adult human yawns over 20 times per day. But why? And, why are yawns contagious? Watch this video to find out.

Yawning is something we all do, often without even realizing it. But have you ever stopped to wonder why we yawn, and why seeing someone else yawn can make us do the same? Let’s explore the fascinating world of yawning and its contagious nature.

Yawning is a natural reflex that occurs in humans and many other animals. On average, adults yawn over 20 times a day, and it's nearly impossible to resist the urge to yawn when it strikes.

Scientists have proposed several theories to explain why we yawn. One theory suggests that yawning helps increase oxygen intake and expel carbon dioxide from the body, especially when we're tired and not breathing deeply enough. Another theory suggests that yawning may help regulate brain temperature, ensuring optimal cognitive function.

Regardless of the reason behind it, one thing is certain: yawning is contagious. Studies have shown that the likelihood of yawning increases by 60% after witnessing someone else yawn. This contagious yawning phenomenon doesn't appear until early childhood, and it may be related to a concept called social mirroring.

Social mirroring is a behavior in which one organism subconsciously imitates the actions of another. This phenomenon extends beyond yawning to include behaviors like scratching, laughing, and even smiling. It's believed to be an ancient way of recognizing useful behaviors and building social bonds.

While the exact purpose of contagious yawning remains a mystery, some experts believe it may be a form of social communication or empathy. Recent studies have shown that people are more likely to yawn contagiously with close acquaintances than with strangers, suggesting a deeper emotional connection at play.

So, the next time you find yourself yawning, take a moment to consider whether it's a result of your own fatigue or a subconscious response to someone else's yawn. Either way, yawning remains a fascinating and mysterious aspect of human behavior.

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