YOU’VE PROBABLY NOTICED THAT YOU FEEL AWFUL when you fly. And this isn’t just because of grumpy passengers, small seats, and an inability to recline — there are actual physiological reasons that your body feels just terrible while in flight.

Citybase Apartments put together an infographic explaining what happens to your body in the air. This is what’s happening (and how you can avoid some of the worst discomforts).

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Infographic by Citybase Apartments