In fact, yawning is an easy form of sleep , which, in turn, provides a more long-term

Some scientists then believed that if a neuron generates an impulse, then it works, and if it does not generate, it means it is "lazy." And then someone came up with the idea to check: how many neurons in the whole brain "work", and what - "hits the buckets"? The neurons in the brain are several billion, and it would be pure madness to measure the activity of each of them - it would take many years. Therefore, instead of studying all the neurons in a row, scientists studied only a small part, determined among them the percentage of active ones and suggested that this percentage is the same throughout the brain (this assumption is called extrapolation). And it turned out that it "works", that is, it generates impulses, only indecently a small percentage of neurons, and the rest - "silent." From this, a slightly straightforward conclusion was drawn: silent neurons are idlers, and the brain works only for a small part of its capabilities. This conclusion was completely wrong, but since it was at the time to "correct nature", for example, to turn the rivers back, irrigate the deserts and drain the seas, the idea that the work of the brain can also be improved was adopted and started its victorious march through newspaper pages and magazine spreads. 

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