When I teach the equalization technique
s, I mention; nose pinch/gentle blow against nose
with held breath, yawning with teeth still clenching the mouthpiece, wiggling the jaw again clenching mouthpiece, above three combined (reason for first video housings
), tilting/stretching the neck to one side and then the other while doing any or all the above. Another thing to consider is what way does air want to go underwater? If you point the hard clearing ear(s) toward the surface, you are not fighting nature to push air
down into the area it needs to go.
Before the flames start; nose pinch equalization should only be done while
not ascending. Many beginners feel any pressure in the ear and then think "pinch and blow", but the inexperienced often mistake the pressure of expanding air during ascent for the descending compression that "pinch and blow" is all about. Some people with tender ears need to equalize on ascent, but yawning/wiggling is the only safe way for that, IMHO.
Pinch and blow while ascending can cause a number of injuries. By saying "while holding your breath" shortly after reciting the number one rule in diving, we get to discuss a number of important subjects.
For starters, pinching and blowing does not put air into the ear if you do not close your airway, so we only do this while descending!