why is yawning accompanied by a sound similar to white noise, or blocking out all sound altogether?

513 views

why is yawning accompanied by a sound similar to white noise, or blocking out all sound altogether?

In: Biology

Anonymous 0 Comments

Your jaw opens and you breathe in, hence the noise or lack thereof. Your ear canals change shape when your jaw opens all the way.

The goal of yawning is for CO2 exchange and possibly brain temperature regulation.