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What is a fact about the human body that not many people know about?有什么關于人體的事實是很多人不知道的？

評論翻譯Acrobatic_Classic_13Migraine pain can lessen from vomiting. Vomiting can cause dehydration. Dehydration can cause migraines.偏頭痛可以通過嘔吐緩解。嘔吐會導致脫水。脫水會導致偏頭痛。The human body is funny.人體真的很搞笑。THElaytoxI learned recently that ocular and retinal migraines are a thing. Thought I was going blind我最近才知道原來眼睛的偏頭痛和視網膜的偏頭痛是同一個東西。我以為我要瞎了。

nightmarepoetmy trick is taking magnesium regularly, caffeine, a cold washcloth on your forehead in complete darkness and silence, and a nap我的方法是經常攝入鎂，咖啡因，在完全黑暗和安靜的環境下往額頭上放一塊涼抹布，然后睡一覺。tinherbellYes, before the pain of a migraine I get blind spots and it dots. I was trying to solve a sudoku and a number I placed kept disappearing I kept putting it back for it to only actually remove it. I realized what was happening rushed to some medicine and tried to fall asleep before the pain started.沒錯，在偏頭痛發生之前我會有視野盲點，并且那里會有小點點。我有一次在嘗試解開一道數獨，然后我放的一個數字一直在消失，我一直在把它放回去，但只是把它移除了。我意識到發生了什么之后趕快去弄了一點藥，試著在偏頭痛開始之前讓自己入睡。WirelessTreesHeadaches can be cured through resting and sleep. You can't fall asleep because of your headache. Your headache gets worse because you're thinking about it without having any other stimulus. Now your mild headache is double the intensity.頭痛可以通過休息和睡眠治愈。但你會因為頭痛而睡不著覺。因為你沒有其他的刺激只能思考頭痛這件事，你的頭痛會變得更糟糕。現在你本來挺溫和的頭痛一下子就就翻倍了。Suspicious-Passion10Had a monster migraine last December, felt like absolute dogshit all morning. Took a migraine pill and about an hour later I threw up. The nausea disappeared instantly afterward and the headache was like 80% gone. I've never had that happen before.去年十二月經歷了一次很猛的偏頭痛，一整個上午都感覺糟糕的要命。吃了一片管偏頭痛的藥，一小時之后我吐了。在吐完之后惡心的感覺立刻消失了，并且頭痛也消失了80%。在此之前我從來沒經歷過。LayleloThis is what happens to me most of the time I have a migraine. I read somewhere that sometimes your digestive system stops working during a migraine so anything you eat or drink is probably just sloshing around in there and the best way to reboot everything is to just be sick. That’s how it works for me, anyway. I really think migraines are very very inpidual.我偏頭痛發作的時候就總是會發生這種事情。我在哪里讀到說有的時候你的消化系統會在偏頭痛期間停止運行，于是你吃進去喝進去的東西基本上就一直在那里堵著，重啟的最好辦法就是直接犯惡心。至少我是這樣的。我真的覺得偏頭痛是非常非常個人化的東西。cherry_tiddyIt's like headache/migraine pills that list "headache" as a sideffect.就像一個把“頭痛”列為副作用的頭痛/偏頭痛藥片。

BrummelhummelViruses be like: "i am a bad guy, but that doesn't mean i am a bad guy"病毒：“我是個壞蛋，但這不意味著我是個壞蛋。”WirelessTreesHow nice it could be to create an artificial virus that is able to produce the amino acids that we cannot produce ourselves, or the various vitamins that we cannot produce ourselves.假如能制造一種人工的病毒，它能生產我們不能生產的那些氨基酸或者維生素該多好啊。Double points if it uses our fat stores as a source for the energy required to create those necessary vitamins or proteins.假如我們能用自己的脂肪作為生產這些必要維生素或蛋白質的能量來源，那就更好了。ApprehensiveFox8844Im not positive but I think CRISPR works kinda like that. I believe they use viruses to edit genes.我不太確定，但我記得CRISPR（譯注：規律間隔成簇短回文重復序列，一種可以對生物的DNA序列進行修剪、切斷、替換或添加的技術）就是這樣工作的。我記得他們是用病毒來編輯基因。another_spidermanYou are correct. That is exactly what CRISPR is.你說的沒錯。這正是CRISPR的作用。yukon-flowerViruses are our Experimenters sending down software upxes or test code.病毒就是我們的研發人員，在給我們發送軟件更新或是測試代碼。

jvanderhI think different parts of the body have different pH values (yours might be for the bloodstream) but absolutely yes on changing pH with food, etc being B.S.我記得身體的不同部分有不同的pH值（你的或許是血液中的），但確實沒錯，用食物之類的東西改變pH簡直就是扯淡。CruithneIf you squirt warm water into someone's ear with a syringe, their eyes will automatically turn to the side that you squirted the water. If you use cold water, their eyes will automatically turn to the other side.假如你用注射器往某人的耳朵里噴射一股熱水，那么他們的眼睛會自動地轉向被噴水的耳朵那一側。假如你用冷水，那么他們的眼睛會自動轉向另一側。guto8797This feels like some leftover debug code bullshit這感覺就像是什么被遺留下來的debug代碼。PlusUltraBeyondHow do I root my body? I want to install Linux on it.我該怎么root我的身體？我想給我的身體裝個Linux。Suspicious_Story_464They actually use it to verify neurological function in severe brain damaged/stroke patients.他們其實會用這種方法來給嚴重腦損傷/腦中風的患者檢驗神經功能。Beneficial-Ground146Hey I can verify this, im an ICU nurse and we perform brain death testing by testing this reflex all the time :)嘿我可以證明，我是個ICU的護士，我們一直都會通過測試這種反射來檢查患者是否腦死亡

not_thatkindofdoctorYea of all the wild stuff on here somehow this is the weirdest thing to me because I cannot fathom a reason for it.沒錯，在這里列出來的所有東西里面，某種意義上這是對我來說最詭異的東西，因為打死我也想不出來這究竟是什么道理。SolvingTheMosaicThe temperature difference between the water and the fluid in your balance organ makes that fluid move. You normally use this rotational information to lock your eyes in place when you move your head.你射進去的水和你的平衡器官里的液體之間的溫度差，會導致那個液體流動。通常你在轉動頭部的時候，會利用這種液體轉動的信息來鎖定你的雙眼的位置。

flamingphoenix9834Your brain continues to try to revive the body long after the heart has stopped. In some cases 30 hours later there has been found brain activity trying to make repairs to bring the body back. This is used to indicate time of death in murder victims.在心臟停止跳動之后很長時間，你的大腦都會不斷嘗試復活你的身體。在某些情況下，在死亡30小時之后人們仍然會發現嘗試進行修補、讓身體重新正常運作的腦部活動。人們用這個來確定謀殺受害人的死亡時間。‐-------------- EDIT: Upon research I should clarify, the brain survives after the heart stops for several minutes, however electroencephalomagnetic (EEG) brain activity continues for not only 30 hours but in some cases up to 72 hours after brain death. 編輯：在研究之后我應該澄清一下，心臟停止跳動之后的幾分鐘內大腦還可以存活，然而通過腦電圖測量的腦部活動不僅可以延續至死后30小時，甚至在某些案例中可以延續到死后72小時。AmapelThis makes me very uncomfortable in an existential way.在某種存在性的意義上這個知識讓我非常不舒服。OF_AmericasGoddessSome people have inner monologue. Some don’t.有些人有內心獨白。有些人沒有。

He doesn't have an internal monologue.他就沒有內心獨白。I do, and mine won't shut up. It's like a news ticker of my to-do list and my worries and conversations I need to have.我有，并且我的根本停不下來。那就像是一個待辦事件列表的提醒，還有我擔心的事情，還有我需要進行的對話。

guto8797Prime example: touching a hot stovetop by accident and withdrawing your hand so fast that by the time you even feel the burn, the hand is far away很好的例子：不小心碰到滾燙的煤氣灶之后，你收回自己的手的速度快到當你感到燙傷的時候，你的手已經撤開很遠了。TexasPatrickHumans are one of a few species of mammal that oddly don't produce their own vitamin C due to lack of a certain enzyme. Other mammalian species who exhibit this mutation are those contained in the main primate suborder Haplorhinni (monkeys, apes, tarsiers), as well as bats, capybaras, and guinea pigs.人類是哺乳動物中少數由于缺乏特定的酶而無法自行產生維生素C的動物之一。其他呈現出這種變異的哺乳動物是靈長類的主要亞目，類人猿亞目的成員（猴子，猿猴，眼鏡猴等等），以及蝙蝠，水豚和天竺鼠等。All other mammals produce vitamin C in the liver.其他所有哺乳動物都能在肝臟中制造維生素C。insomniac_observer30% of body waste is excreted via skin代謝廢物的30%經由皮膚排放localhelic0pter7People who live in "extreme" conditions for generations adapt in extreme ways. For example people that live in high elevations often have larger lungs and different blood makeup. Or my favorite is the Bajau people that live on the water and spend a lot of their time ping, their spleens have become 50% larger in order to store more blood.那些幾代都生活在“極端”環境的人類會用極端的方式來適應環境。比如那些生活在高海拔地區的人們通常都有更大的肺和不同的血液成分。我最喜歡的是在水上生活的巴瑤族，他們的人生有大部分時間都在潛水，為了儲存更多的血液，他們的脾臟增大了50%。grenudistWhen you get conditioned to physical activity, your circulatory system adapts -- more blood, more vessels, more blood cells. But your lungs really don't. This is because no matter how much blood your heart is able to deliver to your lungs, the lungs still have no problem oxygenating it. This is why your oxygen saturation doesn't drop during exercise (unless you have a heart defect.)當你適應某種體育運動的時候，你的循環系統會做出相應的改變——血液更多，血管更多，血細胞更多。但你的肺卻真的不會發生變化。這是因為無論你的心臟能往肺里輸送多少血液，你的肺都能毫無問題地向血液輸送氧氣。所以你的血氧濃度即使在鍛煉期間也不會下降（除非你的心臟有缺陷）。EDIT: Thanks to the actual professional in the field, who I quote below:編輯：感謝相關領域的專家補充，我引用一下：

fatincomingvirusIs that why regardless of how much I exercise I can't go up a flight of stairs without huffing and puffing?是因為這個所以我無論做多少運動上樓梯都照樣會呼哧帶喘嗎？seriousnotshirleyNo. It’s because stairs are really hard. If you compute the amount of power necessary to climb stairs for most Americans it’s roughly the same power that Tour de France cyclists spend most of the day riding at.不，這是因為爬樓梯真的很困難。假如你計算一下大多數美國人上樓梯時的功率，這基本上和環法自行車賽手每天騎車時的功率是同一個水平。Most untrained people will ride a bike at less than half that power. You’ve got to really work at getting to the point that you can climb stairs without huffing and puffing and work really hard to do that for more than a few flights of stairs.絕大多數沒有受過訓練的人騎單車的時候都只能輸出不到一半的功率。你得非常努力地訓練，才能上樓梯不傳奇，并且假如你要多上幾級樓梯的話還要更努力。The adaptations you need are increased heart strength so that you’re pushing more blood easily and you need need improved vascularization in the leg muscles to get blood to the muscles faster and increased mitochondria in the muscles to make use of that extra oxygen the blood is delivering. Beyond that it also helps to have improved fat metsbolism from doing Kong endurance exercise so you’re able to use fat rather than carbs as an energy source for more than a flight or two of stairs.你需要做出的適應包括心臟能力的增強，這樣你就可以更輕松地泵出更多血液，你的腿部肌肉也需要更多血管，讓血液流經肌肉的速度變快，以及肌肉細胞中的線粒體變多，以利用血液輸送的額外氧氣。除此之外你也可以通過做持久訓練來改善脂肪的新陳代謝，這樣你在上樓梯的時候就可以利用脂肪而不是糖來作為能量來源。

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