It's amazing to think that on an average day we swallow over 500 times and the majority of the time nothing goes wrong. The food and liquid end up in our esophagus - not our lungs! The fact that our airway is automatically sealed off when we swallow is amazing as we don't even have to think about it! If we did, eating and drinking would be a much greater life/death experience! Reason no. 563 :)
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