How much do our lungs expand when we inhale?



  1. 0 Votes

    Well, it depends. When breathing in very deeply, our lungs can expand to twice their normal size, though they usually don’t. If you aren’t too squeamish, you can watch the linked video, which has a set of preserved human lungs breathing via machine. Some people have better lung capacity than others, and some can’t breathe as deeply as others, though there are ways to increase lung capacity, as the second link shows.

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