Width-wide yawn Can Cool Your Brain

Do not always assume that yawning is a sign of sleepiness or boredom. Could be, it's because your brain is very high temperature and needs to be cooled. And functions as the coolant evaporates and useful to health was not widely known.


Researchers from Princeton University, United States, found that if yawning with width can decrease the temperature of the brain and preventing the over-heating conditions.


Professor Andrew Gallup, the lead researcher, and colleagues conducted a study in the winter, with the request in 80 pedestrians at random to see pictures of people yawning.


Then, he made ​​a note to see whether the respondent participated evaporated. The research was also conducted during the summer. Known, there are half of the respondents to evaporate in the winter. Meanwhile, only a quarter of which evaporates in the summer.


This makes the researchers believe evaporate could cool the brain, which at first seem counter-intuitive. According to Professor Gallup, yawning cools the brain through heat exchange with cold air, which are drawn inside. However, this system will not work when the weather is hot.


"Nearly 40 percent of respondents (in the winter and summer) to evaporate in the first five minutes when outside the room. But the percentage that evaporates in summer decreases to less than 10 percent thereafter," said Professor Gallup, as quoted by the Daily Mail.


It could also help explain why people become confused and disoriented in hot weather is extreme. That's because the brain has a limited way to cool down. Scientists say that the research results provide a better understanding of related neurological conditions such as motor neurone disease or epilepsy.