You can breathe up to 36,000 times a day without even thinking about it. Isn't it about time you reflected on all the hard work they do? Back to Article
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I have astma :P
We learnt this in science and they brought out a real pair of lungs and a heart :-x
I think science class is TAKING OVER LoL haha xD
i have asthma
They probably work a lot better for people that do not smoke.