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What's something weird and mostly useless that you can do with your body? (lemmy.blahaj.zone)

submitted 5 months ago by [email protected] to c/[email protected]

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[–] [email protected] 30 points 5 months ago (21 children)

I can rumble my eardrums. Mostly useless unless i wanna block out some annoying sound but i can only do it for like a minute at a time.

[–] [email protected] 10 points 5 months ago (18 children)

I think I have the same thing. Is yours also kinda connected to blinking? I can do it without blinking, but closing my eyes at the same moment as rumbling the eardrums feels easier and more natural than rumbling with eyes open.

[–] [email protected] 10 points 5 months ago (1 children)

I can do it without closing my eyes but when i was younger, I remember closing my eyes or scrunching my face made it easier to do. If you can wiggle your ears without lifting your eyebrows, it kind of feels like its the same muscle group that causes the rumbles. The rumbling sounds like white noise inside my head. Its caused by constricting Tensor Tympani muscle in the ear voluntarily. From Wikipedia:

Some individuals can voluntarily produce this rumbling sound by contracting the muscle. According to the National Institute of Health, "voluntary control of the tensor tympani muscle is an extremely rare event",[5] where "rare" seems to refer more to the scarcity of test subjects and/or studies more than the percentage of the general population who have voluntary control. The rumbling sound can also be heard when the neck or jaw muscles are highly tensed as when yawning deeply. This phenomenon has been known since (at least) 1884.[6]

[–] [email protected] 5 points 5 months ago

TIL; I always thought it was temporarily spiking your blood pressure that made that rumble. Now I’m no longer scared to do it

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