This is something I have been able to do for years and I take it for granted sometimes without realising that many others probably can't do what I can. I can open my Eustachian tubes at will, directly, without having to swallow or yawn for example. I have such control that I can hold them open and blow air through them, and I can repeatedly open and close them at speed. Holding them open can also create a rumbling sound.
So the question is: how common is this? I know a lot of divers can do it, but I was never taught how. I just stumbled upon it years ago.
So the question is: how common is this? I know a lot of divers can do it, but I was never taught how. I just stumbled upon it years ago.