Hey there, welcome to Life Noggin

嗨大家，歡迎來到Life Noggin

We're just about done with the winter in the northern hemisphere but until that

我們才剛脫離寒冷的北半球

sweet warm spring weather arrives

不過直到溫暖可人的春天來到之前

We're stuck seeing our breath every time you exhale outside. Well what if I told

我們還是可以看到當我們吐氣時我們的呼吸。如果我告訴你

you that's not really your breath at all?

其實那並不是你的呼吸?

But before I go into that, let's talk about what actually is happening when

在我深入主題之前，先來談談到底呼吸時發生了甚麼事情

you breathe. When you inhale, your diaphragm in the muscles between your

當你吸氣，在肋骨之間的橫模

ribs called the intercostal muscles

又稱作肋間肌

contract, which then expand your chest cavity. When this happens the pressure in

收縮，於是就能擴張胸腔內的空間。這麼一來胸中的壓力

your chest cavity decreases past the outside air pressure

就會減少，甚至比外界還低

which causes the air from outside your body to flow into your lungs.

於是就能讓外界的空氣流入肺

The air contains about 78 percent nitrogen 21 percent oxygen and 1 percent

空氣包含了78%的氮、21%的氧

argon

氬氣

But when the air reaches the tiny air sacs in the lungs called the Alveoli,

當空氣抵達肺中小的攜帶氣體細胞，也就是肺泡

some of that oxygen passes capillaries blood vessels

一些氧氣會經過微血管

and eventually reaches the heart to reward us for providing the blood with

最終抵達心臟，提供血液氧氣

oxygen the capillaries give us their waste products like carbon dioxide

而微血管則會排出廢物像是二氧化碳

Talk about a bad deal, owh, when you're ready to exhale your diaphragm into a

來說說比較麻煩的，噢，當你呼氣

Gluteus muscle relax,

你的臀肌就會放鬆

which makes your chest cavity get smaller and causes the air to flow out

所以會讓你的胸腔變小，並讓空氣從

of your lung

你的肺

and out of your mouth and nose. This exhaled air has a little less oxygen

還有你的嘴、鼻子排出來。排出的空氣含有

than the inhaled air,

比吸入的空氣少的氧

but also about 4 percent more carbon dioxide. But more interestingly you were

不過大概有4%更多的二氧化碳。更有趣的是

also breathing out water vapor

你同時也會呼出水蒸氣

when this warm water vapor reaches the cold air outside, it quickly condenses to

當溫度較高的水蒸氣碰到溫度低的水蒸氣，水蒸氣會迅速壓縮成

form a fog, similar to a cloud, and that is what you see

霧，也就是你看到很像雲的那種

It's not necessarily your breath but rather the water that comes along for the ride.

所以其實來說並不是你的呼氣，水會決定呼出的是什麼

So next time you go for a walk in the cold, you can pretend that you're a cloud

所以你下次在寒冷的天氣裡散步時，你可以假裝你是一隻

breathing dragon

會噴雲的龍

you're welcome in advance, I wish I was a dragon

不客氣。我真希望我是一條龍

Oh hey, I forgot I can do that. As usual I'll be answering a new question every Thursday

噢對，我還能這樣做! 一如往常，每個星期四我會回答一個新的問題

so ask

所以就問!

anything you wanna know in the comment section below or on Facebook and Twitter

任何你想要知道的都可以問!可以在下面的留言區、Facebook、Twitter留言

if you want even more Life Noggin, check out this video we did on deja vu

如果想要更多 Life Noggin 的影片，看看我們做的一部關於「似曾相似」的影片吧！

I'm Blako. This has been Life Noggin. Don't forget to keep on thinking

我是Blako。這就是 Life Noggin ! 別忘了要記得思考

and breathe. Make sure you breathe.

還有呼吸。 一定要呼吸喔!