generate a lot of heat. Much like a computer, the study shows that our brains operate more efficiently when they are cool; yawning is an effective way of increasing blood flow and intake of cooler ...

Yawning is sometimes associated with fatigue ... eaten through them in a process called peristalsis. When there’s a lot of air trapped in them, the contractions causes the air to make the ...

So, if you’re having a particularly boring day at work, you might find yourself yawning a lot for one day out of the blue. Stress and anxiety have also been linked to increased yawning.