12则每个人一定都好奇过「但不好意思问出口」的爆笑害羞疑问！

1. 可以在泳池里尿尿吗？有些人认为如果在泳池里尿尿的话，尿液和泳池里的氯接触会制造出类似催泪瓦斯的氯化氢。但其实要产生这种化学反应、泳池里的氯含量应该要多到足以溶掉人们的皮肤才行，所以尿尿在泳池里是安全的。(等等，要尿尿去厕所尿啦！) 2. 把屁憋住会

December 13, 2015

編輯：Joy Lee

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1. 可以在泳池里尿尿吗？

Everyone has embarrassing questions that they google to avoid asking out loud. But don’t worry, science has come to the rescue with some answers. People once believed if you peed in the pool that it would create a toxic chemical called cyanogen chloride, which is similar to tear gas. The amount of chlorine needed for this reaction would probably melt your skin, so it’s safe to say you can pee in the pool. Still, I’m not saying you should.

有些人认为如果在泳池里尿尿的话，尿液和泳池里的氯接触会制造出类似催泪瓦斯的氯化氢。但其实要产生这种化学反应、泳池里的氯含量应该要多到足以溶掉人们的皮肤才行，所以尿尿在泳池里是安全的。(等等，要尿尿去厕所尿啦！)

2. 把屁憋住会对身体造成影响吗？

Everyone has held in some gas now and again, but can it do damage to you? Holding in a fart can cause bloating and other uncomfortable symptoms, but worst of all it can cause hemorrhoids or even a distended bowel. But don't worry, because you'll release the gas as soon as you fall asleep before any of these things occur.

每个人应该都有憋屁的经验吧？(尤其在电梯里) 憋屁的确会造成浮肿及其他让你不舒服的症状，严重甚至会造成痔疮或肠阻塞！但睡觉时例外，这时候人体内的屁会自己排掉，所以不用担心睡到一半得痔疮啦！

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3. 为什么晕眩的时候会想吐？

Your brain makes you throw up because it thinks it's being poisoned. When you throw up there are three main reasons why: irritation of your brain, irritation of your stomach, or irritation of your hormones. Your brain gets irritated when the fluid in your brain and your inner ears are different and might eject your stomach's contents.

你的大脑之所以会让你想吐，是因为它觉得身体被下毒了。通常你会吐是因为3种原因：脑部、胃部或贺尔蒙受到刺激。当你的脑内液体与你的内耳不平衡时，你的大脑会受到刺激，进而让你想将胃容物排出。

4. 为什么头发会变白？

Your hair actually has no color to it at all. Hair color depends on pigment secretion and this is why it might change over time. When your body ages, it slowly stops producing the pigment and the hair returns to its natural state. Some people’s bodies stop producing the pigment sooner than others.

其实头发是没有颜色的。头发的颜色取决于色素的分泌，所以颜色会随着时间改变。当身体开始老化时，色素的产生就会开始减少、而头发的色素便会开始褪去并恢复到原本的样子。因为体质不同，有些人会比其他人更早开始停止产生色素。

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5. 为什么会宿醉？

Well, that’s because you consumed a shit-ton of alcohol. When you drink alcohol it makes you pee more and in turn dehydrates you. Along with that, alcohol slows down the rate that the stomach empties itself and increases production of stomach acids, which can lead to nausea. Drinking also causes blood vessels to dilate producing that pounding headache.

嗯，首先呢那是因为你喝了太多酒了！喝酒会让你频尿，所以你的身体会开始缺水。喝太多酒也会让你的心跳变慢，而酒精刺激胃产生更多胃酸、便会让你觉得恶心想吐。喝酒也会让你的血管膨涨，因此让你觉得头痛欲裂。

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6. 为什么男生早上会「一柱擎天」？

Morning wood, scientifically known as nocturnal penile tumescence, serves to stretch out the two sponge-like areas that cause erections. For healthy men it is natural to have this happen 3-5 times a night.

这现象在科学上称为「夜间阴茎勃起 (Nocturnal Penile Tumescence)」，是2个主要造成勃起的海绵体伸展所导致，具体发生的原因仍无从得知，但对一位健康的男性来说，一晚发生3-5次是正常的。

7. 为什么鼻塞时，都只有一边会塞住？

Your two nostrils are a team that work together to help you breathe, but they split the workload. Even when you’re not sick, one nostril is doing more work than the other. Your autonomic nervous system, which takes care of things you don’t consciously control, will switch this for you.

你的2个鼻孔是帮助你呼吸的一个团队，所以它们是采取分工合作的方式。就算没生病时、同时间内其中一边鼻孔的工作量还是会比另一边重。你的自主神经系统，也就是替你无意识控制许多事的构造，会帮你自动调整鼻孔的工作量。

8. 可以在海里尿尿吗？

Urine is 95 percent water with sodium and chloride ions. But urine contains something the ocean does not; urea. Urea is a water-soluble organic compound that helps the body rid itself of nitrogen. When urine and ocean water combine, the nitrogen in urea produces ammonium and acts as food for the ocean’s plant life. So go for it.

尿液是由95%的水加上钠与氯组成的，但尿液里含有一个海水中没有的元素：尿素。尿素是水溶性的有机化合物、能够帮助身体排出氮。而当尿液与海水结合时，尿素里的氮会产生出氨盐基、成为海洋植物的食物…所以，尽情地尿吧！

9. 为什么紧张时会流手汗？

Sweaty palms can be caused by two things: emotional stress and your body trying to regulate its temperature. When you get nervous, scared, or excited your sympathetic nervous system will stimulate Eccrine glands on your face, palms, armpits, and more.

手汗的成因有2种：情绪压力或是你的身体想调节体温。当你一紧张、害怕或兴奋时，你的交感神经系统会在你的脸上、手掌、腋下或其他地方，激发出分泌物、也就是汗。

10. 为什么我们喜欢在洗澡时唱歌？

The reasons why you uncontrollably sing are more based on theory. People feel relaxed and comfortable in the shower and they're also alone (well, sometimes). When your body is physically comfortable, you become for mentally comfortable making you more apt to sing. Another theory is that everything surrounding you creates a great acoustic environment that makes your voice seem fuller.

你洗澡时会忍不住想唱歌其实是有原因的。人们在洗澡时感到放松跟舒适，而且通常是自己一个人独处，而当身体感到舒适时、心理也同样会感到舒适，所以这样的好心情会让你想唱歌。除此之外也有其他说法，像是因为浴室里的环境可以创造出超棒的音效 (回音之类)，让你的声音听起来更饱满、更好听！

11. 为什么咖啡让人想便便？

Everyone knows that feeling when you're about half-way through your morning coffee and then immediately looking for the bathroom. This happens because coffee helps stimulate muscle contractions in your large intestine and next thing you know, BOOM!

每个人应该都有这种经验，就是在早上时喝咖啡喝到一半，就开始想找厕所了。原因就是咖啡会刺激你大肠的肌肉收缩，这时你就会开始想跑厕所了。

12. 为什么我们有乳头？(探讨的是男性的乳头)

In the beginning weeks of being in the womb, the embryo starts as a woman and follows that blueprint until testosterone plays its part in males and changes the genetic activity of cells in the genitals and brain. The nipples are there for good after that.

在怀孕的前几周时，子宫里胚胎的性别其实是从女性开始发展的，一直到睾丸激素开始在胚胎里作用、将生殖器与大脑里的基因细胞改变，胚胎才会变成男生。所以一开始便发展出的乳头就在这改变后就一直继续存在了。

来源：The Chive

想不到这些问题背后，都可以用科学来解释呢！赶快将这些答案分享给朋友看看吧！

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