Почему мы зеваем?

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·Nov 3, 2024

Сейчас учёные полагают, что зевания защищает мозг от перегрева. Как и у компьютера, у мозга есть определённая температура, при которой он лучше всего работает. Когда мы зеваем, учащается сердцебиение, улучшается приток крови, усиливается работа лицевых мышц, а мозг охлаждается.

Более того, когда мы зеваем, холодный воздух может понизить температуру крови в голове. А почему наш мозг вообще нагревается? Температура мозга может повыситься, например, из-за утомления или недосыпа.

В подобных состояниях мы чаще зеваем. В одном эксперименте участники с тёплой грелкой на голове в виде зевающих людей тоже зевали в сорока одном проценте случаев, а участники с прохладной — в девяти. Холодная голова зевает меньше.

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Почему мы зеваем?

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