Why Do We Yawn?

Written by Aanandita Mahavadi

Yawning is something we all do, but why does it happen? At first, people thought yawning was just a sign of being tired or bored, but it turns out there’s more to it. Scientists are still figuring out the exact reasons, but they have some interesting ideas.

One popular theory is that yawning helps cool down your brain. Think of your brain like a computer—it works best at the right temperature. When you yawn, you take in a deep breath, which cools your brain and helps it stay sharp. Some studies even suggest that yawning increases blood flow and oxygen to the brain, which keeps you alert.

Have you ever noticed that yawning is contagious? You see someone yawn, and suddenly, you’re yawning too! Scientists think this might be related to empathy. When you see someone yawn, your brain responds by making you yawn as well. It’s like your body’s way of connecting with others on a social level.

Yawning isn’t just something humans do. Animals yawn too! Dogs, cats, and even birds yawn, and their reasons might be similar to ours. For example, some researchers think animals yawn to communicate or to prepare for action.

While yawning might seem like a simple reflex, it’s actually pretty fascinating. It’s a mix of biology, psychology, and even social behavior. So, the next time you catch yourself yawning, remember—it’s your body’s way of keeping your brain cool and ready to go!

References:

Gallup, A. C., & Eldakar, O. T. (2011). The thermoregulatory theory of yawning: What we know from mammals. Frontiers in Neuroscience. https://www.frontiersin.org

National Geographic. (2017). Why we yawn, and why it’s contagious. https://www.nationalgeographic.com

Written by Aanandita Mahavadi from MEDILOQUY