 So, so many people have that ringing in the ear. Is it normal? It's not normal. Okay. It's, we call it tinnitus and it means there's a sound you hear in the absence of outside sound coming in to stimulate it and a lot of things can cause it. What are some of those things? Most people with tinnitus have hearing loss and the theory is that when the brain is expecting to hear sound and it doesn't, it'll fill in the blank, it'll actually generate its own noise at the brain, kind of like a localized seizure and make sound. Interesting. I never thought, I never knew that's what was happening. Okay.