Why We Yawn, Time Travel, and Other Big Questions? 🤔⏳🥱

Sleep Tight Science - A Bedtime Science Show For Kids

Sleep Tight Media

Kids & Family, Education For Kids

4.4 • 613 Ratings

🗓️ 5 March 2025

⏱️ 24 minutes

🔗️ Recording | iTunes | RSS

🧾️ Download transcript

Summary

In this episode, we’ll discover why yawning isn’t just about being tired—it helps cool your brain and can even be contagious! We’ll explore the nature of time and why building a time machine isn’t as simple as it sounds. We’ll also uncover why eating salty foods makes us thirsty and how different countries developed their languages over time. Finally, we’ll look at why children need parents and how this is similar to animals in the wild, where young creatures learn essential survival skills from their families. Sleep Tight!, Sheryl & Clark --- Resources Why Do We Yawn? Does salt increase thirst? How does language evolution occur over time and what factors influence it? --- Support Us 👉 Join Premium for AD FREE listening and extra bedtime stories! 👉 Sleep Tight Premium is now available in Apple Podcasts! 🎉 ⭐⭐⭐⭐ Leave a review wherever you listen to podcasts, or share our podcast with your friends. 📢 Have an interesting science topic you would like to investigate? Send us an email at [email protected] , and we may feature it in an upcoming show. --- About Sleep Tight Science We’ve got bedtime down to a (Sleep Tight) Science! Sleep Tight Science is an engaging bedtime show that makes science accessible and enjoyable for the whole family. Snuggle in and drift off to sleep while learning about science topics submitted by listeners! Designed for curious young minds (but simple enough for grown-ups to understand), Sleep Tight Science uses big words to answer big questions that kids wonder about, like why do we feel icky sometimes and how do our legs help us move? Learn something new about the natural world while drifting off to dreamland. Have an interesting science question or a topic you’re curious about? Email us at [email protected], and it might just be the focus of an upcoming episode! Dedicated to enhancing the health and happiness of children, Sleep Tight Media helps families replace bedtime struggles with bedtime snuggles. -- Made in Canada 🇨🇦

Transcript

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0:00.0	You're listening to Sleep Tight Science.
0:13.6	Did you know yawning is contagious, even across species?
0:20.2	What?
0:21.2	If you yawn in front of your dog, there's a good chance they'll yawn right back at you.
0:28.7	Try it and let us know what happens.
0:47.1	Hello, friends, and welcome back to Sleep Tight Science, a bedtime show that answers your questions about science.
1:00.1	In this episode, we will answer some of the questions you have sent in. We read all your emails, comments, reviews, and suggestions. They all help us study topics that interest you and share what we have learned.
1:06.4	We can't answer all your questions directly, but today we will cover a whole range of different topics.
1:14.6	We hope you learn as much as we did.
1:20.6	Our first question is from Akela, who is nine years old and lives in China.
1:26.6	Akila asks, why do we yawn?
1:32.2	Ugh.
1:35.1	Yawning is a common reflex in which you open your jaw wide, take a deep breath, and then quickly breathe out.
1:45.7	It lasts about four to seven seconds
1:48.7	and often happens when you wake up or fall asleep.
1:55.2	Yawning is one of those everyday mysteries we all experience.
2:05.5	But did you know scientists are still trying to fully understand why we do it? You might yawn when you're tired, bored, or just waking up. But what's happening
2:16.4	inside your body?
2:20.1	When you yawn, a special substance called surfactin
2:24.5	coats the tiny air sacs in your lungs,
2:27.8	called alveoli, helping to keep them open and working properly.
2:39.0	And while most people think yawning only means you're tired or bored, new studies suggest there's much more to it than that.
	...

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