Just go chill- your brain that is.

There is still so much that science does not understand about human physiology and behavior.

Up until a new study was released last month, it was still undetermined what purpose yawning served. Now it seems that based oncontrolled observationsof Australian Parakeets (they have relatively large brains), ithas been theorizedthat the function of yawning seems to be cooling off the brain.

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