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Yawning is an involuntary reflex of the body. When yawning, people open their mouths wide, take deep breaths, and air fills their lungs. Accompanying the yawn, the diaphragm stretches, eyes close tightly, and tears may flow. This seemingly natural physiological phenomenon that everyone experiences turns out to carry significant implications for health that we might not realize.
Yawning is an involuntary reflex of the body. When yawning, people open their mouths wide, take deep breaths, and air fills their lungs. Accompanying the yawn, the diaphragm stretches, eyes close tightly, and tears may flow. This seemingly natural physiological phenomenon that everyone experiences turns out to carry significant implications for health that we might not realize.
Everyone yawns, whether it's a baby in the womb or people engaged in monotonous, tiring tasks. It's often seen as a sign that the body needs rest. Additionally, yawning can also be contagious among humans and other animals.
Science explains this phenomenon as a result of changes in human states. Most people yawn when sleepy or bored, though this isn't always the case. Yawning is accompanied by feelings of fatigue, increased heart rate. Yawning not only signals the need for rest but in some cases, like after exercising or moving from high to low pressure areas, people still yawn. In such cases, yawning indicates a change in state, transitioning from high energy to low energy in the brain, or releasing built-up pressure in the diaphragm when external pressure changes.
According to Medical News Today, yawning has many health benefits. Yawning is a function of breathing, and when yawning, the blood receives additional oxygen due to the influx of a large amount of air. By inhaling large amounts of air, blood circulation in the body is accelerated, helping to cool the brain. Some studies have shown that when yawning, the body's temperature drops to about 20 degrees Celsius, which is ideal for cooling blood and the brain.
Yawning is observed in animals too. Medical News Today explains this as a phenomenon reflecting empathy among individuals within a community. Witnessing someone yawn can induce yawning in others, especially when they share closeness or comfort. A study published in PLOS One demonstrated that chimpanzees watching videos of other yawning chimpanzees also yawned in response.
Another study in the journal PLOS One also revealed that yawning contagion in humans is a personal reaction. There is very little correlation between intelligence, the timing of yawning throughout the day, or empathy among test subjects. However, yawning contagion seems to be influenced by age. Older individuals are less susceptible to yawning from others.
Although yawning is a harmless phenomenon and even brings many benefits to the body, there are cases where yawning indicates health instability. Disorders in the body, especially involving the vagus nerve (the nerve connecting the throat and abdomen to the brain), can cause excessive yawning through interactions with blood vessels, known as the Vasovagal response.
The vasovagal response is a sign of sleep disorders or neurological conditions, heart disease, or issues related to the carotid artery. Therefore, if yawning excessively, visiting a doctor is essential.
