How You Breathe In · Lungs
Make the space bigger, and air walks in by itself.
You never actually suck air in. You make room, and the atmosphere pushes air in to fill it. Every breath you take is really the outside world doing the work.
There's more: make the space bigger, and air walks in by itself. The full explanation — and the interactive version you can tap and quiz yourself on — lives in the app.
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