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  • Some people fast for religious reasons or medical reasons,


  • but isn't not eating for a long time kind of dangerous


  • Bom dia earthlings, thanks for stopping by DNews, I'm Trace.

    感謝您收看 DNews ,我是崔斯

  • The Holy Month of Ramadan is wrapping up this week,


  • and those Muslims who have been fasting for 15 hours a day or more will be able to enjoy food anytime once again.

    穆斯林在經過一天 15 小時的禁食後終於可以想吃就吃了

  • It's not just Muslims who fast, Christians, Jews, Confucians, Hindus and other religions have followed the practice for thousands of years.


  • Non-religious folks fast too, usually for medical or dietary reasons.


  • For some people, the idea of abstaining from food while the sun is in the sky is unfathomable,


  • and they might feel that it's even unsafe! So science is here to demystify some fasting myths.


  • A person is considered to be "fasting" if they've abstained from a meal for 8-12 hours,

    一個人 8 到 12 小時沒有吃任何東西,就算在禁食

  • so if you think about it, most people fast every nightand then BREAK their fast in the morning.


  • That's where the term BREAK-FAST comes from.

    這也就是英文 Breakfast 的由來

  • Fasting is a completely normal part of being an animal on the planet of earth.


  • Many organisms eat only once a day or less,


  • especially those eating high-calorie foods like meats. Cold-blooded carnivores, like


  • snakes, can go DAYS between meals, whereas warm blooded carnivores, like wolves or coyotes, they hunt daily.


  • Like the coyote, humans are built to be able to fast for a short period. A day or so isn't


  • going to hurt you and some studies have shown short-term fasts can actually extend lifespan, they can boost


  • immunity and mental function, and so on and so forth. We did a whole video about that last Ramadan. So check it out.


  • A study published last month in Cell Stem Cell found that fasting two to four days at

    Cell Stem Cell 網站上個月發表一項研究指出,禁食時間長達二到四天

  • a time can cause a reduction in white blood cells, which sounds bad, but it's actually a GOOD thing. See,


  • the cells that are killed off are the older or damaged immune cells, and when the body


  • rebounds, it uses stem cells to create brand new, healthy ones.


  • Long-term fasting, on the other hand, is a whole other beast. When humans fast, our bodies


  • go through a very predictable schedule. Our bodies are great at squirreling away energy


  • in the forms of fats and sugars. But, like coyotes, ideally, we'd eat every day or so


  • to replenish those reserves. After 24-48 hours of fasting, the glycogen reserves stored in


  • our liver and musclesbasically carbohydratesare empty. After two days, the body's figured


  • out that it needs to feed on itself, and is going to start breaking down muscle and fat tissues.


  • Obviously, water is important too. 72 hours without water is dangerous, so while straight

    想當然,水分也是很重要的。人只要 72 小時沒有喝水就有危險,所以在這短時間內

  • food fasting isn't so bad for you in a short burst, 72 hours is the beginning of

    不吃固體食物,不會對你有害,但 72 小時不喝水

  • medical dehydration. So drink water, no matter what.


  • Some of you might already be Yahoo-ing to get the lowdown on a fasting diet,


  • but the problem is, humans don't REALLY work that way. When you fast, you lose a few pounds right


  • away, but that's mainly liquid weight, and it will be replaced as soon as you eat again.


  • Which is another thing, Researchers at Cornell asked college students to fast for 18 hours,

    康乃爾大學的研究人員就做了一項實驗:請大學生禁食 18 小時

  • and then offered them a buffet-style meal (not unlike Iftar, or community meals after

    18 小時後,提供自助式餐點給他們 (不是伊斯蘭教的那種晚上吃的集體開齋飯)

  • sundown during Ramadan). The most popular foods were those that were high in calories,


  • carbs and starches, because our cells don't know if we're EVER GOING TO EAT AGAIN! Therefore,


  • they turn on the cravings for carbs and fats which might fend off long-term starvation.


  • But that's silly, you know you're going to eat again! Don't listen to your reptilian


  • brain! Ideally, a human coming off of a fast would eat vegetables and fruits. Lean meats


  • and a few carbs can be part of the meal, too, but not a big part.


  • Ultimately, fasting puts stress on the systems of your body, but low-level stress that isn't going


  • to hurt you, and it might build up the systems -- similar to how exercisebuilds muscles.


  • Fasting isn't dangerous or deadly, as long as it's done properly and in partnership with


  • a healthy diet and exercise.


  • If you decide to fast, let us know why and how you've done it! You know, cause we're curious.


  • You can fill us in on your journey in the comments, or send us a tweet at-DNews or me

    你可以在下方留言,或在推特留言給 DNews 或我也行

  • at-TraceDominguez. Speaking of journeys, if you want to know how MSL Curiosity got to

    說到「旅程」, 你們知道美國NASA的火星探測車「好奇號」成功抵達火星了嗎?

  • Mars, and what the heck it's doing up there come to our SpaceOut on July 30th at 4pm Pacific

    想知道更多細節, 7 月 30日太平洋時間下午四點,請準時鎖定 SpaceOut

  • Time! We're getting experts from NASA JPL who actually work with the rover on Mars every

    我們會邀請 NASA 噴射推進實驗室的專家們來到現場,他們的任務就是在火星上和探測車共事

  • sol -- that's Martian for Day! See you're learning already! Get over there and RSVP.

    可以說是現代版的火星人了!看,你已經學到一些東西了. 記得收看並留言回覆

  • Thanks for watching DNews! and please subscribe.

    感謝收看!不要忘了訂閱 DNews

Some people fast for religious reasons or medical reasons,


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【生活英文】禁食時,你的身體會發生什麼事? (What Happens To Your Body When You Fast?)

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