Whether we’re tired or not, at some point during the day it is inevitable that we yawn. Although it is entirely easy and natural, there are a number of reasons why we actually do it. Traditionally, a yawn was thought to be a clear sign of tiredness, however this may not necessarily be true. Yawns are also a kind of phenomena since they are infectious and uncontrollable, yet we can also yawn at will. Furthermore to the mystery of yawning, unborn babies, mammals, birds, fish and reptiles all yawn too!
Perhaps the most obvious reason for yawning, but it also reflects when we are feeling calm and energised for example when we wake up.
2. Oxygen Requirement
Another theory suggests that we yawn because we need to increase the amount of oxygen in our blood or to decrease the amount of carbon dioxide. However, there are some who disagree with this idea because studies have shown that when we breathe pure oxygen, it doesn’t affect the occurrence of yawning, for example unborn babies in the womb.
3. Cool The Brain
Although yawning can increase heart rate, it also helps to cool down the brain due to the intake of air. This is perhaps why we yawn more in hotter temperatures.
Contrary to common belief, yawning and boredom have no direct links! If anything, the extra inhalation of oxygen increases the body and brain’s alertness.
5. Contagious Yawn
Even if we don’t feel like yawning ourselves, the awareness of someone else yawning will make us repeat the action.
After reading this blog, we are sure you would have yawned a few times yourself! The concluding factor is that they are a simple part of daily life and a phenomena which is open to further investigation.