Question

why we yawn while studying???​

Answer 1

Answer:

According to Gallup and Gallup, our brains, not unlike computers, operate more efficiently when cool, and yawning enhances the brain's functioning by increasing blood flow and drawing in cooler air.

Answer 2

According to Gallup and Gallup, our brains, not unlike computers, operate more efficiently when cool, and yawning enhances the brain's functioning by increasing blood flow and drawing in cooler air.

or,

Motor cortical excitability is a measure of how easily neurons fire—how quickly the cells send signals across the brain—and prompt us into actions like yawning.