But have you ever stopped to think about what those calories look like?

但是你可曾知道卡路里看起來是什麼樣子?

For example, this is 200 calories worth of apple

例如，這一盤蘋果就等於200卡

On the other hand, if we take 200 calories worth of cheese, it doesn't look quite the same in terms of volume

另一方面，如果把200卡換成是起司，份量就完全不一樣了。

throw 200 calories of wine into the mix for a nice wine and cheese

把200卡換成是紅酒或是紅酒加起司

And you have three very different looking versions of 200 calories

那200卡就有三種不同的面貌了

Now compare that wine to beer or rum, and you have three very different party nights for your stomach

如果把紅酒換成是啤酒或萊姆酒，那你就有三個不同的200卡酒趴來滿足你的胃

Or how about the eggs you had for breakfast

如果200卡換成是你早餐吃的蛋

Compare that to 200 calories of sweet cereal you had the other day, or even some oatmeal

或是前幾天才吃過的麥片，甚至是燕麥粥

And they're bound to seem a bit different

比較一下就可以看出差別

But if you had gotten a sausage and egg breakfast sandwich, You'd be looking at even less

若換成是你早餐吃的香腸蛋三明治，份量看起來就會更少

Broccoli? You may be surprised by the amount you can eat before you hit 200 calories

綠花椰菜呢？你也許會驚訝吃了一堆結果還不到200卡

Not to mention this stuff is packed with nutrients and a great source of fiber

更別提那些標榜高纖和高營養的食品了

A slice of pizza? Less than a slice if it has pepperoni on it

一片披薩？如果上面有義大利香腸那不到一片就達標了

And what about the classic Big Mac? Try a 200 calorie 'Small Mac'

經典的大麥克呢？你還是吃200卡的「小麥克」好了

And since calories are simply units of energy, with the calories of 217 Big Macs

卡路里是熱量計算的單位，217個大麥克的卡路里

You can drive your car 35 Kilometres

可以供你開車跑35公里

So, wait. What is a calorie?

那麼，等一下，卡路里到底是什麼？

Specifically, a calorie is the amount of energy, or heat it takes to raise the temperature of 1 gram of water

具體的說，卡路里是使一公克的水溫度升高攝氏一度

By one degree celsius

所需的能量或熱量

We need energy to survive, and we get it from food

我們需要熱量才能存活，熱量的來源就是食物。

Carbohydrates, Protein and fats are the building blocks of our food, and each contribute a different amount of energy to our bodies

碳水化合物(醣)、蛋白質和脂肪是食物的構成元素，每一種成份都提供身體不同的能量

The average person needs somewhere between 2000 to 2700 calories a day

一般人每天需要的熱量約2000到2700卡

Depending on factors like height, weight, gender and age

根據每個人的身高、體重、性別、年齡而不同

And some foods like peanut butter are calorie dense, filling this requirement faster

有些食物像奶油花生醬就屬於高卡路里，很容易達到200卡

Or that muffin you ate as a snack, chances are its calorie content is higher than you thought

或者你把鬆餅拿來當零食吃，那你吃下去的卡路里很可能遠超過你想像的多

And those irresistible Doritos? Don't lie, you ate the whole bag

令人無法抗拒的多力多滋脆餅呢？別騙人了，我知道你已經吃了一整包

Unlike Celery, which has very few calories, giving you lots to munch on

不像芹菜或胡蘿蔔只有很少的卡路里，你可以放心的大快朵頤

Or carrots

也沒問題。

Not so much Hershey's Kisses

別吃太多巧克力

And if you're eating salad to limit calories, watch out for creamy dressing

如果你用吃生菜沙拉來減少攝取的卡路里，那要注意所吃的沙拉醬

Particularly, french dressing

特別是法式沙拉醬

On its own, black coffee is quite low on calories

如果咖啡不加奶和糖，它含的卡路里就很低

You can have a lot before you hit 200 calories

你要喝很多才會到200卡

But once you add one cream and one sugar, those calories quickly add up

一旦你加了奶和糖，它的卡路里就馬上飆升

Turn it into a specialty drink, like an Iced Peppermint White Mocha

換成特調冰飲，像是白摩卡薄荷冰咖啡

And you might be shocked at the amount left

光是剩下的卡路里就夠你下一跳

But, just because something has less calories

但是，低卡的食物

Doesn't necessarily mean it's healthier or better for you

並不一定表示就比較健康或對身體有益

Take for example this 200 calories of coke vs. 200 calories of whole milk

就拿都含200卡的可樂和全脂牛奶來比較好了

While it's true that the coke contains fewer calories per liter

雖然每公升可樂所含的卡路里比較低

You can't forget that milk contains many nutrients and healthy fats

但你絕不能忽略牛奶中所含的營養和好的脂肪

Or like brown bread vs. white bread

或者拿白土司和全麥吐司來比較

Yes, whole wheat bread often contains more calories per slice, but it also contains more nutrients and fiber

雖然一片全麥吐司的卡路里比較高，但是它也含有更多的營養及纖維質

So, counting calories isn't the be all and end all

所以並不是光用計算卡路里來決定一切

But thinking about what goes into your body is bound to make a difference

而是應該想一下吃進去後對身體的影響

At the end of the day, eat a healthy and balanced diet

最後，祝大家有均衡的飲食而且吃得健康

And if you'd like to see even more 200 calorie examples, check out the WiseGeek post we've linked in the description

如果你想看更多200卡食物的例子，可以到WiseGeek網站看看

Which puts even more food into perspective

那裏有更多說明

Got a burning question you want answered?

有亟待解決的問題嗎？

Ask it in the comments, or on facebook and twitter

可以在意見欄、臉書或推特上發問

And Subscribe for more weekly science videos!

別忘了訂閱我們每週科學新知視頻