andrew gallup

If you are planning to control yawning, then you should probably change it. Regardless of the polite issue, yawning whenever your body wants to help reveal the intelligence you

Previously, many people thought yawning was a sign of fatigue, lack of oxygen. But, Professor Gary Hack at the University of Maryland (USA) has proved that yawning helps people

We often yawn when we feel sleepy, bored, or even suffering