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The science of yawning

The science of yawning

It's something we do every day, multiple times, and we often "catch" it from other people doing it. Correspondent Faith Salie looks into the physiology of yawning, and why it not only helps our brains, but also is a sign of empathy and, yes, increased alertness.

CBS News2021年11月7日

Yawning Animals

Close-up of snake yawning 😱 #animals #Amazing | Machine Job Tv

Close-up of snake yawning 😱 #animals #Amazing | Machine Job Tv

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Cute long tailed macaque monkey yawning. Animals in wild

Cute long tailed macaque monkey yawning. Animals in wild

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Lion King Yawning 👑🦁 #animals #amaZing #wildlife #nature #safari | Wildest Kruger Sightings

Lion King Yawning 👑🦁 #animals #amaZing #wildlife #nature #safari | Wildest Kruger Sightings

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Yawning is Contagious – Even for Animals

Yawning is Contagious – Even for Animals

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Why is yawning contagious? What to know about your yawn reflex.

Why is yawning contagious? What to know about your yawn reflex.

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Yawning Cats - By rodrigoledesmaok

Yawning Cats - By rodrigoledesmaok

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Why Do We Yawn?

Why do we yawn?

Why do we yawn?

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Why Do We Yawn?

Why Do We Yawn?

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Why do we yawn? | Life

Why do we yawn? | Life