In response to a change in pressure, you may frequently feel the need to pop your ears at high altitudes. This act is made possible by yawning or swallowing which relieves pressure and "pops" your ears.
When you yawn and your ears "pops" at high altitudes, this is because the Auditory, or Eustachian tube allows the pressure to equalize on both sides of the ear drum.
The eustachian tube connects the middle ear (deep to the eardrum) to the back of the nose and upper throat. This structure connects the middle ear to the rest of the world. Swallowing or yawning can help clear blocked ears when ascending or descending from high altitudes. Chewing gum throughout the altitude change helps by causing you to swallow frequently. This may keep your ears from becoming clogged. Swallowing or yawning opens the eustachian tube, allowing air to enter or exit the middle ear. This helps to balance the pressure on both sides of the eardrum.
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