Yawning is a sign of changing body state

We know yawning is a natural reflex of many animals. However, when a deeper understanding of this phenomenon was found, scientific researchers discovered many more interesting things, suggesting yawning is a signal to inform a certain state change of the body.

Every animal yawns. Even this phenomenon occurs in the fetus. Usually, a yawn lasts for 5 to 10 seconds. People yawn when hungry or full, when sleepy or awake. When people yawn, it also means " need to eat", "need to go to sleep " .

Studies show that yawning in humans is likely to spread. However, this is not true for everyone. In a movie theater, when people yawn, some people sitting next to them yawn and then this phenomenon will spread to half of the audience in a period of 5 minutes. Some people will be more yawn, because they are sensitive to the emotional state of those around them.

According to scientists, yawning can also be a diagnostic tool and help detect neurological diseases. For some people with headaches, repeated yawning may signal the beginning or end of the pain. On the contrary, yawning will be virtually non-existent in people with Parkinson's disease.