What Is It About Yawning Answer Key?

Last Modified: Published: 2023/03
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Yawning is a natural bodily function that we all experience. It is a reflex action that involves inhaling deeply and then exhaling. Yawning can be contagious and often happens when we are tired or bored. In this blog post, we will explore the science behind yawning and why it happens.

What Happens When We Yawn?

When we yawn, our bodies take in a large amount of oxygen. This helps to increase our heart rate and blood pressure, which in turn helps to wake us up and make us feel more alert. Yawning also helps to cool down our brains, which can become overheated when we are tired.

Why Do Yawns Seem Contagious?

Yawns are often contagious because they are a form of nonverbal communication. When we see someone else yawn, our brains automatically trigger a response that makes us want to yawn too. This is known as contagious yawning and is thought to be linked to empathy and social bonding.

Is Yawning a Sign of Tiredness?

While yawning is often associated with tiredness, it can also be a sign of other things. For example, we may yawn when we are anxious or stressed, or when we are trying to stay awake during a boring meeting. Yawning can also be a sign of certain medical conditions, such as sleep apnea.

What Causes Yawning?

The exact cause of yawning is still not fully understood. However, there are a few theories that have been put forward. One theory is that yawning helps to regulate the amount of oxygen and carbon dioxide in our bodies. Another theory is that yawning helps to stretch the muscles in our face and neck, which can become tense when we are tired or stressed.

Does Yawning Help Us Sleep?

Yawning is often associated with sleep, but it is not clear whether it actually helps us to sleep. Some studies have suggested that yawning may help to increase blood flow to the brain, which can make us feel more relaxed and sleepy. However, other studies have found no link between yawning and sleep.

Do Animals Yawn?

Yes, animals also yawn. In fact, contagious yawning has been observed in a wide range of animals, including dogs, cats, and even fish. Scientists believe that contagious yawning in animals may also be linked to social bonding and empathy.

Can We Control Our Yawning?

While we cannot completely control when we yawn, there are some things we can do to reduce the frequency of yawning. For example, getting enough sleep, avoiding caffeine and alcohol, and staying hydrated can all help to reduce yawning. We can also try to be more conscious of our breathing, as shallow breathing can make us more prone to yawning.


Yawning is a natural bodily function that we all experience. While the exact cause of yawning is still not fully understood, it is clear that yawning serves a number of important functions in our bodies, from regulating our oxygen levels to cooling down our brains. By understanding more about yawning, we can learn to use it to our advantage and improve our overall health and wellbeing.



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