the misters of yawning托福阅读

the misters of yawning托福阅读
"The Mysteries of Yawning" is a TOEFL reading passage that discusses the phenomenon of yawning. Yawning is a reflex action that involves opening one's mouth wide and breathing in deeply due to tiredness or boredom. The passage explores the various theories and explanations behind why people yawn and its possible functions.
Some theories suggest that yawning helps regulate brain temperature and increase oxygen intake. The passage also introduces the hypothesis that yawning is an ancient defense mechanism that helps to coordinate social behavior in a group. It is believed that contagious yawning may have evolved as a way to synchronize the sleep patterns of individuals in a social group.
The passage further explores the relationship between yawning and empathy. Studies have shown that individuals who are more empathetic are more likely to yawn in response to seeing others yawn. This suggests that contagious yawning may serve as a form of nonverbal communication and emotional bonding.
Other factors that can trigger yawning, such as sleep deprivation, boredom, or the sight of others yawning, are discussed in the passage. It also mentions how certain conditions or medications can cause excessive yawning as a symptom.
Overall, "The Mysteries of Yawning" TOEFL reading passage delves into the science and theories behind the act of yawning and highlights its potential social and physiological functions.。