What is Yawning ?
You open your lips, take a deep breath in, and then swiftly exhale as a reaction to yawn.
Some yawns are brief, while others persist for a few seconds before an exhale via the mouth is opened. Yawning may be accompanied by watery eyes, groaning, or audible sighs.
Causes of Yawning :
1. Changing of a state
Although it is frequently assumed that yawning indicates weariness or boredom, it is not always the case. Despite the fact that yawning may indicate fatigue, yawning causes a sharp increase in heart rate. People may yawn when their physical conditions change, for as when they move from a region of high pressure to one of low pressure. The person may yawn to relieve the pressure that has built up in their eardrums.
2. Way of communication
Humans may have used yawns to communicate before they developed vocal communication. Yawns are regarded as a symptom of boredom or drowsiness, and it is possible that is what early humans were trying to say. However, early humans might have utilised yawning as a way to communicate, to alert others to their alertness, to display their teeth to attackers, or for some other purpose.
3. For proper breathing
Breathing may play a role in yawning. When the blood needs more oxygen, yawning may be more common. A yawn creates a large breath intake and a rapid heartbeat, which potentially may indicate that more oxygen is being pumped through the body. Therefore, a yawn might just be intended to help the blood become more oxygenated and rid of pollutants.
Other possible causes :
- Reliable Source
- a brain tumour, even if this is uncommon
- reputable source, like multiple sclerosis (MS)
- epilepsy, especially when the frontal lobes are involved
- neurological conditions
- Fatigue may be a symptom of liver failure.