GENEVA: A yawn is a spontaneous act. During this time, the eardrums elongate and the eyes shut firmly, making them watery.
It usually arises either prior to or following sleep. Also, it is believed to be a sign of being worn out or bored.
Not to mention that yawning is communicable to people and animals. Even babies do yawn in the womb.
Here are some of the most interesting facts about yawning:
- Yawning is considered the sign of tiredness, however, academics claim that while yawning, the heart tempo increases rapidly, which connotes that this can be a sign of attentiveness and not sluggishness.
- Moreover, you can also have this after doing workout as this would insinuate that your body switches from high energy to low energy. Nevertheless, people may often yawn while shifting physical states.
- Some studies opine that it could be a function of breathing. Yawns are more likely when the blood requires oxygen as it triggers a large intake of air and a boosted heartbeat, which, in turns, pumps more oxygen through the body. It clears out toxins from the blood and gives a fresh supply of oxygen.
- Do you know that yawning might cool the brain? Well yes, you have heard the true bit! When the jaw widens, it escalates the blood flow throughout the body particularly face and neck, which cools down the brain.
- We often wonder that when we see other people yawning, why we start up doing the same? Some historians believe that before humans communicated vocally, they may have used yawns to convey their message and watchfulness to others.
- Also, younger people are more likely to catch a yawn when compared to oldies. However, if you yawn too much, then it might be the symptom of mounting sleep or brain chaos, heart attack or troubles with the aorta.