That internal crunching sound when one moves their head and stretches their neck

Question

You can hear all the cracks in your neck and whole back when they happen too.
What is actually happening to my flesh, that I’m hearing?

In: Biology

Answer 1

Quite interested in this.

I think it’s similar to how you don’t really know what your voice sounds like coz what you’re hearing are the vibrations in your body and not the sound you make.

Answer 2

Reminds me of the broken manual pencil sharpener that was attached to the table in the school art room. Grinds around and around but nothing happens

Answer 3

I’m not sure I fully understand the question. Is the question about the crunch/pop sound you hear when you crack your back or neck?

I’ve always heard it explained that the joints in our body contain synovial fluid to allow the bones to glide against each another without causing pain. When you “crack” a joint, the sound we hear is gas bubbles bursting as the synovial capsule stretches