Why Do We Yawn

Yawning is a common behavior not fully understood. While often thought to increase oxygen intake, recent studies suggest it serves as a cooling mechanism for the brain. This process involves increased blood flow and air intake, cooling the brain and enhancing alertness. Scientific experiments have shown that brain temperature influences yawning frequency, with warmer conditions prompting more yawns. The video explores these findings, debunking myths and explaining the physiological and scientific aspects of yawning.

What are some reasons why people yawn according to the text?

How does the act of yawning relate to the body's circadian rhythm?

How does yawning function as a cooling mechanism for the brain?

What physiological changes occur in the body when a person yawns?

What evidence is provided in the text to support the idea that yawning helps regulate brain temperature?