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 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? Many of us think we open ...
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 ...
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 ...
Camels yawn. Most mammals yawn.Why do we yawn? No one really knows the answer.We do know that everyone yawns in the sameway. First you open your mouth slowly Your mouthstays open for about five seconds. Then you quicklyfastclose your mouth.We also know that yawning is contagious, or...
Why do we yawn? 我们为什么会打哈欠? 英文外刊 You know the feeling. It’s impossible to resist. You just need to yawn. A yawn consists of an extended gaping of the mouth followed by a more rapid closure. 你知道那种感觉的,无法抗拒,就想打个哈欠。打哈欠包括两个步骤,先把嘴巴张大...
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 ...
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 . (158words) 1. True or ...
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? 打哈欠是我们所有人都会做...
Why we yawn我们为什么打哈欠? It’s a question that has puzzled scientists for a long time: why exactly do we yawn? In a recent breakthrough, scientists have discovered the part of the brain responsible for contagious yawning. It’s called the primary motor cortex, and controls movement in ...