We certainly yawn more when we’re feeling sleepy orsluggish, but why is this? Theories that it helps give the body extra energy are largelydiscredited, as we don’t yawn when we exercise, a time when we definitely need moreget-up-and...
Yawning.mp3音频:进度条00:0002:57后退15秒倍速快进15秒Yawningis something we all do — maybe because we'reboredcarrying out tedious tasks or because we'retired. Sometimes, just seeing other people yawn canset you off. But is thisbiological...
Yawningis something we all do – maybe because we’reboredcarrying out tedious tasks or because we’retired. Sometimes, just seeing other people yawn canset you off. But is thisbiological functionreallycontagious, and why do we do it in the first place? Many of us think we open our mouths...
Despite all these theories, the truth is that scientists do not know the true biological function of a yawn. What we do know is that yawning occurs in just about every species. It happens when an animal is tired. It can be used as a threat display in some species. 尽管已经有这么多地...
What is certain is that a yawn cancreep up on usat any time even when we think we’re not tired – but, I hope, not when you’re reading this article! 词汇表 yawning 打哈欠 bored 感到无聊的 tired 疲倦的,累的 set sb. off 使某人开始做某事 ...
Yawning is something we all do – maybe because we’re bored carrying out tedious tasks or because we’re tired. Sometimes, just seeing other people yawn can set you off. But is this biological function really contagious, and why do we do it in the first place?
When you yawn, you breathe more deeply. You also stretch the muscles in your face and neck. Maybe this makes you feel more alert.Scientists don't spend much time studying yawning. That is probably because yawning doesn't hurt. It is just something we do. ( ) 1. What happens to your...
What is certain is that a yawn can creep up on us at any time even when we think we're not tired –but, I hope, not when you're reading this article! 词汇表 yawning 打哈欠bored 感到无聊的tired 疲倦的,累的set sb. off 使某人开始做某事biological function 生物功能contagious 有感染力的...
Why do some animals hibernate? Why do some people have phobias? Why do we get nervous before public speaking? Why do some people have perfect pitch? Why do we dream? Why do some people have synesthesia? Why do we yawn? why造句 why 造句 Why do I need to work hard? 因为努力工作可以...
There are a few things that you can do to keep from yawning when you do not want to.Keep your cool When our brain’s temperature is too warm we tend to yawn and so make sure you keep cool.11 Have a cold drink and keep it handy, to take a sip every time you get ...