Yawns, they increase in summer

In the summer it is yawn occurs unpredictably and much more often than in winter. Even when we are rested and not hungry, it still presents itself. Because? Our bodies adapt less well to the scorching heat. Here, a group of scientists from Tucson (USA) and Vienna (Austria) tried to analyze the yawning on residents of some cities. The answer is that the yawn a . could be method from self-regulation of the temperature of the brain.

By examining the spontaneous yawning of passers-by and relating it to weather data, scientists have witnessed a major revelation. In fact, at temperatures between 20° and 25°, people yawn more often. Let’s just say, yawning is like a kind of “freezer” for the brain. Brain faculties work much better below 20 degrees. I yawn then refreshed the brain thanks to increased blood flow through the intake of more air. However, at temperatures above 37° this does not happen, given the too high temperature, the yawn would not be able to cool the brain.

The task of the yawn, a reflex but involuntary act of breathing. It can be easily associated with fatigue, boredom, hunger and even imitation processes. The role is still unclear, but it seems to be some kind of reaction. All to regain a kind of vigilance with a greater influx of oxygen into the blood than to the brain.

Let’s take a closer look at the yawn. In the’inspiration, thanks to yawning, a series of movements is created with the aim of facilitating the passage of air. The mouth is opened, the facial muscles contract, the glottis is raised and the airflow in the trachea is released. Then the rib muscles contract in a lift and expansion of the rib cage with the diaphragm stretched. the phase ofexhalation instead, it sees the gradual return to the starting position with the elimination of the introduced air.