Equalizing Your Ears 101

Whenever we submerge ourselves in water, the weight of the water above us puts pressure on the eardrum, and the deeper we go, the greater the pressure. In order to dive without injury we have to equalize (or 'EQ') the difference in pressure between the water we're diving in, and the airspace inside our ears. If we do not equalize this pressure we will feel pain in our ears, and--if we continue to dive deeper--we could rupture our eardrum. We equalize our ears by pushing air into the eustachian tube from the back of the nasal cavity. There are a variety of techniques for equalizing the ears, but for freediving we emphasize the Frenzel technique. When we Frenzel, we are using muscles in th

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