The study was first conducted on a group of undulating parrots, after which this theory

The study was first conducted on a group of undulating parrots, after which this theory was verified in cold blood in public. At elevated temperature, they began to yawn twice as often as in normal conditions. Physiologically, the specific nature of yawning is a deep breath and a sharp exhalation. As it was established, this simple reflex leads to an effective decrease in the working temperature of the brain. The scientists emphasize that if a person yawns often, one should not take offense at him, it is not because he is bored, but on the contrary, because the person is too focused and his brain is overheated. Thus, yawning is not without reason associated in people with fatigue . If the brain is tired and wants to sleep, the body, in order to maintain its current HiLoad, without losing momentum, is forced to increase the amount of blood flowing through the brain, squeezing out all residual power from the already "sagged" tissues through excess injection of nutrients. The increased blood flow, in turn, leads to an increase in the temperature of the brain, triggering the balancing mechanisms of cooling and adaptation. Exactly the same mechanism is observed in a newly awakened person - the transition from quiet sleep to mental activity dramatically increases the blood flow in the brain, which is rebuilt to a new level of energy consumption, which causes the body to smooth out this temperature gradient by including "coolers" to cool its computing device.