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You can improve further: there is no need to move the jaw, there is a specific muscle which opens the tube. Moving the jaw also stimulates the movement of the muscle. But you can contract the muscle without moving the yaw.
Unfortunately yes, it appears that BTV is feasible only by just one diver every three, on average.
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Thanks! Interesting information. I'm an ear-wiggler and can do VTO and always wondered if the two were correlated.Unfortunately yes, it appears that BTV is feasible only by just one diver every three, on average.
I do not have the knowledge of the reasons: perhaps for some people the Eustachian tubes are not easy to open, or perhaps some people do not have proper control on their muscles. For example, I noticed that people who cannot do BTV usually do not have the control for moving their ears, or curving their tongue as an U.
It seems that there is a genetic base on possessing these muscular control capabilities:
Do you inherit the ability to roll your tongue?
It’s long been thought that the ability to roll your tongue is a clear-cut case of genetics. Claudia Hammond finds it’s not that simple.
They require different muscles. I can move the ears without opening the tubes, or open the tubes without moving my ears. Of course I can also perform both actions simultaneously, if I want...
