zívají

zívají is a word in the Czech language that translates to "yawn" in English. It is the present tense, third-person plural form of the verb zívat, which means to yawn. Therefore, "zívají" specifically refers to the action of multiple people or entities yawning. For example, one might say "Psi zívají" which means "Dogs yawn."

Yawning is a complex behavior observed in many vertebrates, including humans, mammals, birds, and reptiles. While the exact evolutionary purpose of yawning is still debated among scientists, several theories exist. One common theory suggests it is a physiological response to increase alertness and oxygen intake to the brain, particularly during periods of fatigue or boredom. Another hypothesis proposes that yawning serves a social function, acting as a form of non-verbal communication, potentially signaling fatigue, stress, or even empathy. The contagious nature of yawning, where observing or hearing someone yawn can trigger a yawn in another, further supports its role in social bonding or signaling shared states. The physical act of yawning involves a wide opening of the mouth, a deep inhalation, and a subsequent exhalation, often accompanied by stretching of facial muscles and sometimes the body.