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結果 : where do we yawn
2:31

Why Do We Yawn?

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Why do we yawn?

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Why Do We Yawn?

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4:29

Why is yawning contagious? - Claudia Aguirre

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3:19

Why Do We Yawn?

SciShow Kids
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2:55

Why Do We Yawn? What Makes Us Yawn?

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Why do we yawn? | #aumsum #kids #science #education #children

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5:45

なぜあくびが伝染するのでしょうか?

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2:09

Why Do We Yawn? | COLOSSAL QUESTIONS

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2:13

Why Do We Yawn? | Operation Ouch | Nugget

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9:22

Why Do We Yawn? | ShowerThoughts #4

brainlights
78 回視聴 - 4 年前
0:37

I can make you YAWN! 🥱

MoreAliA
49,873,055 回視聴 - 2 年前
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Why Do We Yawn?

Science Saturdays
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【WowWhys】9. Why do we yawn? | #shorts

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66 回視聴 - 1 年前
0:59

Why Do We Yawn?

LastManLight
578 回視聴 - 1 か月前
4:53

Why is yawning contagious? | WTFAQ | ABC TV + iview

ABC iview
2,118 回視聴 - 1 年前
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Why do we yawn?

The Lab DoctoRs
51 回視聴 - 2 年前
0:22

Why Do We Yawn? Uncover the Mystery of Contagious Yawning! 🧠💤 #quiztic

Quiztic
468 回視聴 - 4 か月前
2:11

Why do we Yawn ? Science behind Yawning SCIENCE COLLECTOR

Science Collector
118 回視聴 - 2 年前
3:16

Why Do We Yawn? | ELI5: Explained Like I'm 5 | Fun and Educational Science Videos 😴✨

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7 回視聴 - 2 か月前