Eli5 how does depressurization sickness occur?
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When you dive in deep water the increased pressure of the water forces more gas (oxygen/nitrogen) than normal to be dissolved in your blood. When you then depressurize (surface) too quickly, all of that excess gas rapidly comes out of solution (your blood) causing depressurization sickness aka the bends.
This is also why you shouldn’t fly on the same day you dive, too much pressure difference.
It’s not unlike opening a can of soda and letting all the gas out at once.
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