WHAT IS THE RELATIONSHIP BETWEEN YAWNING AND SLEEP?
When there is some dust in the nose or if there is some blockade, you are getting sneeze. Likewise, body-activity causing out of semi- sleeping state, tiredness, and sleeping sensation, is known as yawning.
It is not correct to say that if yawning comes, sleep comes after that. Yawning. is an indication that there is a requirement for the rest of the body.