Also Tullio Phenomenon! My ENT thinks I have a mild form of this. Hearing tests came back "exceptional" but haven't had further studies done yet.

I can hear myself breathe, my heart rate, things rub and click as I move my head side to side, my ribs pop in and out, and other things. Sometimes I swear it's like I can hear echos; it's helped me determine my shoulders are out of place a few times because I can hear echos in the socket. (I have hEDS so joint subluxations are a daily challenge)