![kkelley3141](/avatars/47689.jpg)
kkelley3141
02.07.2020 •
History
Science Mysteries: Why Do People Yawn? Science has given humans many amazing devices and useful bits of knowledge. We know so much about our bodies and how to stay healthy, for example. We also know how to make machines and devices that make life easy for us. Scientists dedicate their lives to knowledge, but even with a lifetime commitment, sometimes scientists fail to find all the answers. One mystery that still remains unsolved is why we yawn—what makes us yawn and what purpose it serves. Recent studies suggest that we yawn when we get tired as a way to encourage our brains. The theory is that yawning helps cool the brain, allowing it to work more efficiently. According to WebMD's article about these studies, when you yawn, your jaw muscles get stretched, increasing blood flow to your neck, face, and head. Also a deep breath during the yawn forces spinal fluid and blood down from the brain. The cool air then cools down these fluids. Other scientists believe, however, that yawning is a form of communication. This theory attempts to explain why yawning seems to spread from person to person. This kind of behavior is called "contagious yawning" and carries with it a possible social message. Scientists are not yet sure what exactly the message is, but they believe people who have more social empathy are more likely to start yawning when they see someone else yawning. Scientists will continue to investigate the mystery of the yawn. Is it a leftover behavior from before humans had language? Was it a "Hey, I'm sleepy. Let's go to sleep" message? Or is it really just a way to keep our brains cool? While this behavior still is largely a mystery, one thing is certain: you are probably fighting the urge to yawn right about now. Which line from the text shows why scientists continue to study yawning? One thing is certain: you are probably fighting the urge to yawn right about now. Other scientists believe, however, that yawning is a form of communication. One mystery that still remains unsolved is why we yawn—what makes us yawn and what purpose it serves. The theory is that yawning helps cool the brain, allowing it to work more efficiently.
Solved
Show answers
More tips
- G Goods and services What Are the Most Popular Services?...
- P Philosophy How did the concept of module arise in computer science?...
- D Dating, Love, Relationships Why Should the Man be Active and the Woman Passive during Foreplay?...
- S Society and Politics Выборы: Смысл, Значение и Отражение...
- B Business and Finance How to Get Your Money Back When Lending? Top 7 Ways...
- F Family and Home Do Lullabies Help Babies Sleep or Is it Just a Myth?...
- F Family and Home Why Does God Punish Us Constantly and How Can We Fix It?...
- D Dating, Love, Relationships Why do we feel shame?...
- S Society and Politics How Could Nobody Know About the Dead Mountaineers?...
- O Other How to Accidentally Get a Rare Coin with Your Change and How to Know Its Value?...
Answers on questions: History
- H History During the revolutionary era one major tactic the colonists used to protest the taxes was a) boycott british goodsb)move to canadac)ask the french to step in on the colonists behalfd)...
- H History Which of the following is a power denied to the national government? a. change state boundaries b. print money c. tax imports and exports d. enter into treaties with other countries...
- H History The conflicts between white settlers and native americans had mainly to do with a. land. b. culture. c. mistrust. d. various alliances....
- H History Which statement does judge hand not say about the spirit of liberty in his speech the spirit of liberty ?...
- H History How might the reconquista have affected spain s economic and cultural life...
- H History Why does the temperature affect a magnet ?...
- H History The age of jackson is characterized a. the creation of the bank of the u.s. b.the frost war fought as the united states c.the marbury v.madison supreme court case, and d.south carolina...
- H History Aperson s caste was difficult to escape because it was based on what?...
- H History How does nafta encourage mexican trade with the united states...
- H History There we go plz answer it and I will give brainliest!...
Ответ:
all people are required to help capture runaway slaves
Explanation: Hope this helps :)