If the cabin inside an airplane is pressurized why do my ears pop?
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The pressure inside the cabin does change, just not drastically. But there are pockets deeper inside your ear where air gets trapped at a different pressure (either ground pressure when you’re taking off or the higher altitude pressure when landing), and to relieve that difference you need to “pop” your ears and let the air equalize. Chewing gum and yawning and all the other tricks help open up those pockets to equalize the pressure, too.
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