Mapping out the structure of the inner ear.
Those of us who can do it know exactly what it is, while it's a mystery to those who cannot.
People who can ear rumble have the ability to control the tensor tympani, a muscle within the ear. Contracting the muscle creates a rushing, rumbling sound that, if flexed enough, can drown out a significant amount of noise.
This can be useful when someone is saying something that you don't want to hear but don't want to be rude and cover your ears. It can come in real handy if someone is about to spoil your favorite TV show or if you live with someone who can't stop nagging.
Some people cannot voluntarily create the rumbling sound but hear it when they let out a large yawn.
There's a Reddit sub-forum just for ear rumblers with over 60,000 people. Here's how some of them get rumblin'.
"I just squeeze the muscle in my ears I guess," — melvinthefish
"When I flex and hold whatever I'm manipulating to do that, I get my rumble," — ttywzl
"I get a mild rumble just doing the usual flex, but i can make it a bit louder by bringing my top lip up to my nose," — Willmono7
"The best way I can describe it is I 'squint my ears,'" —SteeleIT
Wiggling ears.
Talent Ear GIF from Giphy.
The muscle exists to mask-low frequency sounds so we can focus on those at a higher frequency. It also works to mute sounds we create ourselves such as eating potato chips or coughing. It's a way that helps us from becoming annoyed with our own bodies.
Unfortunately, the muscle has a rather slow reaction time so it cannot prevent us from hearing loud sudden noises like a gunshot or a book slamming on the ground.
Massimo's tweet caused quite a stir on the platform.
Although scientists have known about ear rumbling since at least the 1800s, there doesn't appear to have been too much research on the topic. We know that some can rumble and others cannot, but it's unclear how it breaks down percentage-wise or if it's more prevalent in certain groups.
The good news is that the word is starting to get out and people who've been rumbling all their lives suddenly don't feel so alone.
This article originally appeared on 03.05.20