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The researchers from all over the world study about human brain in order to find the thing that makes the brain work. The interesting result from one of the universities in Albany reveals that a yawn can help the brain working. Moreover, Andrew C. Gallup and Gordon G. Gallup Junior, the two researchers said that human brain uses energy in maximum 33% of the energy that we use per day; therefore, it creates a lot of heat in the brain.
Thereby, a yawn makes brain cells cool down and helps the brain cells to be more effective. Moreover, the researcher found that a yawn can help on blood circulatory system and appropriated working level of the brain. The researchers also suggest that in biology, tired people will yawn to alert themselves from sleepiness and protect themselves from dangerous.
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