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  • OK, so imagine one pound of your own fatty flesh.


  • So if you burn that amount of flesh, and that sounds kind of, you know, weird, but if you were to convert that into energy, you would get about 3500 Calories, which is quite a lot of energy.

    如果你燒掉那塊肉 ,這聽起來是有點怪,但假如你將這塊肉轉化成能量,你就會得到 3500 大卡,這是相當多的能量。

  • That is me talking with Dr. Carson Chow, an M.I.T. trained physicist and mathematician and he is explaining to me why we should care how much energy fat has.


  • In order for you to live and function, you need to burn energy to, like, keep your heart beating, all your organ going and also to move around.


  • But energy doesn’t come for free.


  • So if you are not consuming enough calories you are going to burn that energy with your own fat.


  • So a lot of diet books like to teach this rule, but the problem is its wrong. Here is why.


  • Let's say I eat 500 calories less a day. So after 1 week it would be 3,500 calories, and


  • I would lose a pound, right? Because I'd have to burn it.

    假設我一天少吃五百卡路里。因此一週下來就是 3500 大卡,而

  • Yeah, and if I stayed on this diet for a year I'd burn through 52 pounds.


  • It'd be great! If you keep taking this thing, well, after 2 years I'd lose 104, and after

    如果我維持這個方式一年,我將會燃燒掉 52 磅

  • 10 years I'd lose 500 pounds, you know?

    這真是太棒了!如果一直持續下去,那麼兩年後我會減掉 104 磅

  • So obviously, at some point this rule is going to break down.

    而十年後我會減少 500 磅。你知道了吧?很明顯地,某一天這個規則

  • It will actually break down before you get to a year. So to understand the real math behind losing weight, Dr. Chow wanted me to imagine a leaky


  • bucket.


  • You have some water in the bucket and that's the amount of body fat or tissue in your body.


  • And the leak represents the rate at which you are burning energy.


  • In reality what you are doing is adding water at the top, that's like eating food. And when


  • you are in steady state the amount of water you add at the top exactly balances the amount


  • of water you lose at the bottom.


  • If you are pouring in more water than it is leaking then you are going to gain weight.


  • Now if you think about the physics of a leaky bucket, the more water you pour into the bucket


  • the faster it's gonna leak.


  • So the leak rate scales with how big you are. And this is a well-known fact, that the larger


  • you are, the more energy you burn.


  • You're going to burn more energy because it takes more energy just to move a larger mass.


  • You have more tissue and just to keep that tissue going it takes more energy.


  • Congratulations. You have a new steady state. But lets say you don't want to stay this large


  • person that you've become. Well, the opposite is true, as well. You can pour in a lot less


  • water than you are leaking. But...


  • As you start to lose weight you start to get smaller and you burn less energy and you start to metabolically adapt to your new diet.


  • And so you are never going to lose weight at one constant rate. It is always going to


  • curve from one steady state down to another. Which means...


  • When you go on a diet, the 3500 calorie rule is the wrong rule.


  • There is a new rule. Wait for it...


  • The new rule is, for every ten calories you eat less, you lose a pound. But it will take

    當你節食時,那個 3500 大卡的減重規則是錯的。

  • you about 3 years or more to see that the full affect of your diet, which is still pretty


  • good. All you have to do is eat a hundred calories less, you lose ten pounds. That's

    新的規則就是,你每少吃 10 卡路里,你就減去一磅。但是這會花上

  • like a can of Coke. So you should expect the diet to be extremely slow.


  • Right, but nobody wants a slow diet. We all want to lose 20 pounds for this summer. What's

    棒的。你需要做的是少吃 100 卡路里,然後你就會減去 10 磅。100 卡路里差不多

  • wrong with just focusing on losing weight rapidly?


  • The problem is once you are at this new weight they have to be vigilant for the rest

    是的,但沒人想要一個很慢見效的飲食方式。我們都想在夏天前減去 20 磅啊。專注在

  • of their life. Because losing weight is slow, gaining weight is also slow.


  • But it slowly creeps up, and then two or three years later, bang, it hits them, and they're


  • back up to where they were.


  • So the mathematically approved rule for weight loss: for every 10 calories I don't eat a day I'll eventually lose one full pound.


  • Which means changing your steady state is a marathon and not a sprint.


  • Hey guys, this is Todd. Thanks so much for watching! Uhh If you want to have life-changing

    所以經由數學證明的減重規則:我每天少吃 10 卡路里

  • epiphanies like this one delivered automatically every single week, make sure you subscribe.


  • Also, through Facebook, Twitter, and Google Plus, we ask you, "What would you advise people


  • who are trying to take the slow path to losing weight?" And here's what some of you said.

    嘿大家好,我是 Todd。非常謝謝你們的收看!如果你想要每週自動收到改變人生、讓人產生頓悟

  • If you have any additional thoughts or comments, make sure you leave them in the comments section


  • below. And make sure you join us next week when we're gonna talk about the differences

    還有,我們有在臉書、推特和 Google+ 上面問你們:「你們會提供什麼建議

  • between white bread and sugar. Or, are there actually any differences? We'll find out.


  • See you next week!


OK, so imagine one pound of your own fatty flesh.


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減肥的致命關鍵:減重背後的超真實科學 (How To Lose Weight: The Real Math Behind Weight Loss [Epipheo.TV])

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