问题:身处险境能激发你的超能力吗?
QQs: Can danger give you super strength?
你可能听过这种版本的故事:孩子被困在车下
You might’ve heard some version of this story before: A kid is trapped under a car,
恐慌中的母亲举起了汽车 使孩子转危为安
and, in a panic, his mom somehow lifts the car up to get him to safety.
这听起来就像电影里的桥段 但它确实发生了!
This sounds like something straight out of a movie, but it actually does happen!
所以危急关头到底会发生什么呢?
So what really goes on in these life-threatening moments?
真的有人能爆发出超人的力量吗?
Can anyone summon superhuman strength?
哦 可能吧
Well, kind of.
在极端环境下 某些生物学变化会让你如获神助
Some biological changes can give you a boost in extreme situations,
但是存在身体方面的限制
but there’s a limit to what your body can do.
当你感到压力或恐惧时 大脑会发出信号
When you’re stressed or terrified, your brain signals your adrenal gland
促使肾上腺释放皮质醇和肾上腺素 进入你的血液
to release hormones like cortisol and adrenaline into your bloodstream.
皮质醇能增加血液中葡萄糖的含量
Cortisol can increase the amount of glucose in your blood,
肾上腺素可以提高呼吸频率和心率 往你的身体里 包括你的肌肉
and adrenaline can pump up your breathing and heart rate to shuttle more oxygen around your body,
输送更多的氧气
including to your muscles.
这会让你充满能量
And this can give you an energy boost!
还有证据表明 处于压力下 你的大脑会释放一种叫“内源性大麻素”的化学物质
There’s also some evidence that your brain releases chemicals called endocannabinoids it is when you’re under stress,
它可以减轻你的痛苦
which can reduce the pain you feel.
目前 科学家不能在实验室里制造高压 危险的情况来研究这一切
Now, scientists can’t exactly create high-pressure, dangerous situations in a lab to study all this.
就像 你知道 让志愿者和具有攻击性的熊共处一室之类的
Like, y’know, trapping a volunteer in a room with an aggressive bear or something.
所以很难理解这些化学物质会让身体达到怎样的极限
So it’s hard to understand how much of an effect these chemicals have on pushing your body to its limits.
搞清楚这些极限的具体内容就更难了
And figuring out what those limits are is even harder.
研究人体运动的科学家 被称为“人体运动学家”
Scientists who research human body movement, called kinesiologists,
他们试图通过研究竞技运动员 来更好地了解这些限制
have tried to study competitive athletes to get a better idea of these limits.
通常认为你的身体不会用尽全力
It’s thought that your body doesn’t usually generate all the force it’s capable of.
部分原因是它更有效率
Partially because it’s more efficient
毕竟 你拿起手机发短信时 不需要调动手臂上所有肌细胞
after all, you don’t need every muscle cell in your arm to pick up your phone and send a text.
但它也是神经系统的一种保护方式
But it’s also a way your nervous system makes sure you don’t injure yourself by
确保你不会由于过度用力而损伤肌肉组织
pushing your muscles too hard and damaging tissues.
生死存亡之际 或者奥运会之类的高压环境下
In a life-or-death situation, or a high-pressure situation like the Olympics,
你的大脑似乎决定莽撞行事
your brain seems to throw caution to the wind.
应激反应会让你的身体消耗更多能量
And stress responses cause your body to use more energy.
但是 切记你自己的身体极限:如果你状态良好时能举起50公斤
Still, it’s important to remember your body has its limits: If you can only lift 50 kilograms on a good day,
那么无论如何你可能都举不起两吨重的汽车
you probably can’t pick up a 2000-kilogram car no matter what.
另外 这些轰动的新闻可能有几分误导
Plus, those sensational news stories can be kind of misleading.
当然啦 或许确实有人举车救子
Sure, maybe someone did pick up a car to save their kid,
但他们可能不会“美国队长”一样轻而易举
but they probably didn’t deadlift the whole thing like Captain America.
他们可能只是举起了一端 这并不是太重好吗
They probably just lifted one end, which isn’t nearly as heavy.
所以对于时不时出现的超能力事件 我们得分清科学和科幻小说的区别
So while there’s some evidence for bouts of super strength, we’ve still got to separate science from science fiction.
所以 你不要学超人 用血肉之躯挡火车
So… probably don’t try to stop a train like Superman or anything.
感谢提问 特别鸣谢“众筹网站”的所有赞助人
Thanks for asking, and thanks especially to all of our patrons on Patreon!
如果你想为我们提供此类素材 请登录 patreon.com/scishow
If you’d like to help us keep making episodes like this, you can go to patreon.com/scishow.
不要忘记在YouTube上订阅我们 youtube.com/scishow
And don’t forget to go to youtube.com/scishow and subscribe!

相关热播

  • 2021-09-07机器人外科医生和其他4项如科幻小说的医学进展《科学秀》 Modern medicine is pretty incredible.现代医学成就让人叹为观止 But even in a world where open-heart surgery但即便在心脏直视手术 and brain-scanning headsets sound almost mundane,和耳机式脑扫描仪都很寻常的当今世界 some medical advances..
  • 2021-08-24万有理论There’s still a holy grail that scientists are searching for科学家们仍在追寻科学界的圣杯 and it’s called a theory of everything.万有理论 What is a theory of everything? Well…万有理论是什么呢? This is General..
  • 2021-08-24臭虫。说真的!?这是一只雌性(温带臭虫)臭虫。在安静的夜晚,它会从藏身的地方悄悄爬出来,This is a female Cimex lectularius. In the quiet of night, she crawls from her hiding 朝你所散发的二氧化碳气体和温度的地方移动。place toward the carbon dioxide gas and warmth emanating..
  • 2021-09-02大堡礁是如何形成的?20,000 years ago, this area wasn’t even underwater.两万年前这片区域甚至都没在水下 It was covered with eucalyptus and paper bark forests.而是被桉树和纸树皮林所覆盖 And it was home to animals commonly found on the Australia..
  • 2021-08-24致命的火焰龙卷风长什么样子?2018年7月 加州卡尔大火 引发了致命的火焰龙卷风 科学家对此做出了解释 那天 一股从太平洋吹来的寒冷而密集的风 裹挟沉重的气流冲下山坡 和下面的热空气相撞 引发了破碎波和涡流紊流空气 当涡流和火海相遇时 火焰中产生了龙卷风 它延伸至比三个足球场还宽 比加州最高的山还高 内部温度飙升至2700华氏度 风速超过每小时165英里 仅仅40分钟 卡尔火焰龙卷风 毁坏了方圆一英里的道路
  • 2021-09-07伪装:动物捉迷藏嘘!我们正在玩捉迷藏!Shh! We’re playing hide and seek! 但是,我似乎不能找到Squeaks.你能吗?But, I can’t seem to find Squeaks. Can you? 轻音乐播放着[Soft music playing] 啊哈!找到了!Hah! Found yah! 咯咯的笑![Giggles] 在这里,我们很擅长捉迷藏。Here at th..
  • 2021-09-07关于多相式睡眠 科学家到底知道什么?[ ♪ Intro ][片头音乐] Conventional wisdom says we’re supposed to get 8 hours of sleep a night.人们普遍认为 我们晚上的睡眠时间 应该达到8个小时 Fewer of us actually do,事实上能做到的人特别少 with the CDC reporting that a third of American..
  • 2021-09-02如何修复古式真皮家具[soft music][轻音乐] [vacuuming][吸尘] Hi. My name’s Steven.嗨 我是Steven Today we’re gonna walk through how to restore a leather chesterfield.今天我们将介绍如何修复真皮沙发 This chesterfield chair we have in眼前..
  • 2021-09-07垃圾食品是如何干扰你的大脑的[音乐][INTRO ♪] 众所周知 垃圾食品 虽然它不健康 但是 很好吃Junk food: you know it’s not healthy, butit’s so good. 有时候 很难拒绝它And sometimes, it’s just too hard to resist. 科学家曾经试图弄清楚为什么垃圾食品And scientists have been trying to f..
  • 2021-09-02思想实验“体验机”:快乐是美好生活的秘诀吗?Here is the Thought Experiment. 这里是《思想实验》 A good life isn’t just about having a good time.美好生活不只是过得愉快 It’s about having a true time.更要活得真实 《电视点子》 In this episode, we’re going to tal..
  • 2021-09-02为什么月亮会变成红色?If there’s one thing we can rely on,如果说有一件事情我们能永远相信 it’s that the moon will always be there.那就是月亮会一直在 Night after night.夜夜如此 But our long-serving lunar satellite但作为长期守护地球的卫星 is actually changing,月球其实..
  • 2021-09-07关于猫咪的冷知识What if I told you that there might be a sneaky predator如果我跟你说 在你家里可能有一个 with super powers in your house right now?潜在的 拥有超强能力的捕食者该怎么办呢? If you live with one of these, there is!如果你和其中的一只在一起生活 那就是真有 I’..

我要评论

    评论加载中...

译学馆所有视频和图片来自互联网版权归原创者所有。

加载中...