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How a keg stand makes liquid defy gravity

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Human anatomy specifically designed the esophagus to push food downward with the help of gravity, but weekend warriors decided to casually defy biology. By inverting a person and pumping pressurized liquid into their mouth, you force the body to rely entirely on peristalsis to move fluid upward against gravity. It is a stunning display of anatomical resilience dressed up as a party trick.

How a keg stand makes liquid defy gravity
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