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Right now, you're probably sitting down to watch this video
and staying seated for a few minutes to view it is probably okay.
But the longer you stay put, the more agitated your body becomes.
It sits there counting down the moments until you stand up again
and take it for a walk.
That may sound ridiculous.
Our bodies love to sit, right?
Not really.
Sure, sitting for brief periods can help us recover from stress
or recuperate from exercise.
But nowadays, our lifestyles make us sit much more than we move around,
and our bodies simply aren't built for such a sedentary existence.
In fact, just the opposite is true.
The human body is built to move,
and you can see evidence of that in the way it's structured.
Inside us are over 360 joints, and about 700 skeletal muscles
that enable easy, fluid motion.
The body's unique physical structure gives us the ability to stand up straight
against the pull of gravity.
Our blood depends on us moving around to be able to circulate properly.
Our nerve cells benefit from movement,
and our skin is elastic, meaning it moulds to our motions.
So if every inch of the body is ready and waiting for you to move,
what happens when you just don't?
Let's start with the backbone of the problem, literally.
Your spine is a long structure
made of bones and the cartilage discs that sit between them.
Joints, muscles and ligaments that are attached to the bones
hold it all together.
A common way of sitting is with a curved back and slumped shoulders,
a position that puts uneven pressure on your spine.
Over time, this causes wear and tear in your spinal discs,
overworks certain ligaments and joints,
and puts strain on muscles that
stretch to accommodate your back's curved position.
This hunched shape also shrinks your chest cavity while you sit,
meaning your lungs have less space to expand into when you breath.
That's a problem because it temporarily limits the amount of oxygen
that fills your lungs and filters into your blood.
Around the skeleton are the muscles, nerves, arteries and veins that form the body's soft tissue layers.
The very act of sitting squashes, pressurizes and compresses,
and these more delicate tissues really feel the brunt.
Have you ever experienced numbness and swelling in your limbs when you sit?
In areas that are the most compressed,
your nerves, arteries and veins can become blocked,
which limits nerve signaling, causing the numbness,
and reduces blood flow in your limbs, causing them to swell.
Sitting for long periods also temporarily deactivates lipoprotein lipase,
a special enzyme in the walls of blood capillaries
that breaks down fats in the blood,
so when you sit, you're not burning fat nearly as well as when you move around.
What effect does all of this stasis have on the brain?
Most of the time, you probably sit down to use your brain,
but ironically, lengthy periods of sitting actually run counter to this goal.
Being stationary reduces blood flow
and the amount of oxygen entering your blood stream through your lungs.
Your brain requires both of those things to remain alert,
so your concentration levels will most likely dip
as your brain activity slows.
Unfortunately, the ill effects of being seated don't only exist in the short term.
Recent studies have found that sitting for long periods
is linked with some types of cancers and heart disease
and can contribute to diabetes, kidney and liver problems.
In fact, researchers have worked out that,
worldwide, inactivity causes about 9% of premature deaths a year.
That's over 5 million people.
So what seems like such a harmless habit
actually has the power to change our health.
But luckily, the solutions to this mounting threat are simple and intuitive.
When you have no choice but to sit,
try switching the slouch for a straighter spine,
and when you don't have to be bound to your seat,
aim to move around much more,
perhaps by setting a reminder to yourself to get up every half hour.
But mostly, just appreciate that bodies are built for motion, not for stillness.
In fact, since the video's almost over, why not stand up and stretch right now?
Treat your body to a walk.
It'll thank you later.
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【TED-Ed】坐著對身體沒好處? (Why sitting is bad for you - Murat Dalkilinç)

90666 分類 收藏
稲葉白兎 發佈於 2017 年 8 月 21 日   Dennis Wang 翻譯   Kristi Yang 審核

影片簡介

在閒暇時間時,大家是不是跟小 V 一樣,喜歡當 couch potato(極為懶惰、喜歡躺著或是坐在沙發上看電視的人)呢?但是長時間的坐著其實對身體非常的不好,快看今天的主編精選,了解一下久坐到底會帶給人體什麼壞處吧!

1stay put0:15
stay put 的意思是「留在原地不動、維持不變」,stay 表示「停留」、put 表示「固定的、不動的」,組合起來就是這個片語的意思囉!
Stay put so I can find you when I get back.
別亂跑,我回來的時候才找的到你。


stay 常常與其他形容詞組合成片語,下面小編就選幾個常用的分享給大家:

stay tuned 保持注意力 / 不要分心 / 不要轉台
Stay tuned! We'll be right back with more information on the topic.
別轉台!節目馬上回來,給大家更多這個主題的資訊。


stay hungry 保有熱忱、鬥志、野心
Stay hungry, and you'll learn a lot from this experience.
保持熱忱,你就會從這個經驗學到很多的。


stay loose(= hang loose)放鬆
It is important to stay loose before taking an exam.
在考試前保持放鬆、冷靜是很重要的。


stay clear of 避免接觸 / 見到(某人、物)
Stay clear of the rails! It's extremely dangerous.
不要靠近鐵道!那非常危險。


2recuperate0:34
recuperate 有「恢復、使恢復健康、彌補」等意思。這個字是從拉丁文的動詞 recuperare 來的,包含重新獲得、恢復、重生等意思。re- 是最常見的拉丁字首之一,表示「再次」,而 -ate 結尾則表示狀態 / 特質。
It took me three months to fully recuperate from the operation.
我手術後花了三個月才完全恢復。


在這邊就整理幾個 re-開頭、-ate 結尾,由相同邏輯組合而成的動詞吧!
reactivate(使 ...)恢復活動
regenerate 重建、再生
rehabilitate 恢復原狀、修復
renovate 整修、翻新、修復
renegotiate 重新談判

*同場加映:
幫助現代人壓力管理的三招 Stress Management Strategies: Ways to Unwind


3wear and tear1:53
wear and tear 是「磨損、損壞」的意思,指的是正常狀況下會出現的使用痕跡。 wear and teardepreciation 在財務、會計上的用法則十分相似,都是指長期的使用造成的價值下跌。
This car shows serious signs of wear and tear. We should buy a new one.
這台車已經有嚴重使用痕跡了,我們該買新的了。


*同場加映:
TED-ED:常常姿勢不正確?告訴你良好姿勢的優點有哪些!(The Benefits of Good Posture-Murat Dalkilinç)


4run counter to3:23
run counter to 跟跑步一點關係都沒有噢!它表示「違反、背道而馳」,這個片語最早被使用時,counter 是「相反方向」的意思。
His actions run counter to his words.
他的行為與他的說詞背道而馳。


其他有著相似意思的用法包含:

disagree with「不同意、不一致」
I disagree with you on this matter.
在這件事情上我不同意你的想法。


deviate from「背離、偏離」
Don't deviate from the subject, stay on topic.
不要偏離主題。


clash with「衝突、牴觸」
The recent decision that the sales department made clashed with the corporate philosophy.
銷售部門最新的決策與公司理念衝突。


bear no resemblance to「完全不相似」
Sally bears no resemblance to her sister Sarah.
莎莉與她的妹妹莎拉完全不像。


看完影片後,有沒有照影片的建議,馬上站起來走走呢?小 V 自己也常常上班坐了一整天,反而覺得腰酸背痛的。提醒大家上班或讀書時,要記得多伸展、運動,才能遠離疾病痠痛喔!

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