減掉的脂肪都到哪兒去了

This may seem like a silly question, but it's one we've all pondered at least a few times along our weight-loss journeys. Where does the fat go when we lose weight? Do the fat cells burst and flush out? Do we expel it during bathroom breaks? Do little fairies fly in at night and swipe away all that unwanted jiggle? Let's get into the science, dispel some myths, and answer some (fat-)burning questions.
看起來這個問題好像比較蠢，但減肥過程中，我們可能都不止一次的想過這個問題。減掉的脂肪去哪兒了？難道是脂肪細胞爆裂被沖走了？是不是上廁所的時候排掉了？是不是晚上小仙女飛來帶走了所有你不想要的肥肉？讓我們探祕科學、揭開神話，回答一些有關脂肪燃燒的問題吧。

First of all, there is a difference between weight loss and fat loss. Weight loss is an overall decrease in the number on the scale. This could be from water loss, muscle loss, fat loss, or even getting a drastic haircut (and no, we're not referencing your bangs in high school). Fat loss, however, is the amount of body fat we lose, and this is done when the body burns off more calories than it consumes in a given day.
首先，體重減輕和脂肪減少是有差別的。體重減輕是指稱上的數字總體下降。這可能是因爲水分流失、肌肉減少、脂肪減少或是剪了很多頭髮導致的（不，我們指的可不是你讀高中時留的劉海）。然而，脂肪減少指的是減掉的身體脂肪數量，當身體攝入的卡路里量少於身體燃燒的量時，脂肪就會減少。

According to certified personal trainer Heather Neff, "To lose fat, you need to rev up your metabolism with plenty of exercise and good nutrition." But you can't live without fat. It's as indispensable to your body as muscle, blood, and bone!
持證私人教練希瑟·內夫說，"想要減少脂肪，你得大量運動、吸收營養、加快新陳代謝。"但沒有脂肪你是活不下去的。脂肪和肌肉、血液、骨頭一樣，都是身體不可或缺的部分。

Sounds crazy, right? The truth is that fat doesn't make you fat, as many have been led to believe; "it helps to burn fat and aids in so many body processes," Neff said. Fat is the delivery system for hormones. It is essential for brain function, muscle growth, and so much more. Now before you jump for joy on the way to the nearest Dunkin' Donuts, I have the unenviable task of making it clear that we're talking about healthy fats that can be found in foods such as avocados, eggs, lean meats, organic dairy, nuts, seeds, bananas, and others.
聽起來很瘋狂，對嗎？事實是，脂肪不會讓你變胖，雖然很多人都這麼以爲，"它能夠幫助燃燒脂肪，促進人體活動，"內夫說。脂肪是激素的輸送系統，對於大腦功能、肌肉增長等等都至關重要。但在你興沖沖的去最近的一家唐恩都樂買甜甜圈前，我需要完成一項艱難的任務，也就是說，我們說的脂肪是指牛油果、雞蛋、瘦肉、有機奶製品、堅果、種子、香蕉等食物中的健康脂肪。

OK, so you can't exactly cut fat out of your system, but where does fat go when you lose it? The answer to that may surprise you. "The correct answer is that most of the mass is breathed out as carbon dioxide. It goes into thin air," said physicist Ruben Meerman, MD. So the fat doesn't leave your body in the form of urine or feces (well, not completely).
所以，你無需從身體系統內減少脂肪量，但減掉的脂肪去哪兒了呢？答案可能會讓你大吃一驚。"正確的答案就是：大多數的脂肪都以二氧化碳的形式被我們吐氣吐出去，進入空氣中了。"物理學家魯本·梅爾曼醫學博士說。所以，脂肪並不是以尿液或噗噗（不完全是）的形式離開了你的身體。