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Why We Yawn

Yawning isn't really a symptom of being bored, but it could be a sign of arousal. Weird.

FacebookWebMD已浏览 4.9万次2016年2月3日

Why We Yawn

Why do we yawn?

Why do we yawn?

FacebookOutschool

已浏览 1774 次7 个月之前

Why Do We Yawn?

Why Do We Yawn?

FacebookSciShow

已浏览 3.7万次2015年4月29日

AMA #6: Eye Health, Why We Yawn & Increasing Motivation - The Global Herald

AMA #6: Eye Health, Why We Yawn & Increasing Motivation - The Global Herald

theglobalherald.com

2023年4月27日

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Why Do We Yawn?

Why Do We Yawn?

FacebookBecause Science

已浏览 1万次2020年4月6日

George's Biggest Yawn

George's Biggest Yawn

2023年8月6日

Why do we yawn, and why is yawning contagious?

Why do we yawn, and why is yawning contagious?

YouTubeFactuals

已浏览 227 次2023年7月8日

Yawning Animals

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

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

FacebookMachine Job Tv

已浏览 4957 次2023年3月26日

Cute long tailed macaque monkey yawning. Animals in wild

Cute long tailed macaque monkey yawning. Animals in wild

shutterstockPerfect Lazybones

2017年5月13日

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

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

FacebookWildest Kruger Sightings

已浏览 2249 次10 个月之前