Yawning

There are lots of things in daily life which we can’t understand why it’s happening, previously many scientists gave explanations that we yawn when we need oxygen but as it turns out ,this theory is not valid. This has been proved by Dr.Robert Provine, he put the experimental subject in rooms containing different levels of oxygen but every individual seem to show same level of frequency of yawning. We do not yawn when we are tired rather it depends on the age. Recently the researchers have found that yawning is an act of cooling the brain the brain is like a computer processor and when it gets heated it is cooled by yawning. This has been found by analyzing the parakeets by putting them in the thermal boxes and changing the temperatures when the temperature is increased the frequency of yawning also increased.