Skip to main content
Like
Create new Glog
previous
next
Email share
349 views | 0 likes | 0 reposts
Why Do We Yawn?
Yawning feels satisfying doesn't it? It was once thought that yawning was caused by low levels of oxygen in the blood. Scientists now say yawning is affected by the temperature of your brain. You can simply splash your face with some cold water to help reduce the number of times you yawn. Scientists also believe breathing through your nose may help in reducing the amount of yawning.
http://www.coolquiz.com/trivia/explain/docs/yawn.asp http://faculty.washington.edu/chudler/yawning.html World Book Encyclopedia
Ethan Hamilton
