snap, crackle, pop???
I have knots in my shoulders-- have had them for well over 10 years. Sometimes when they get really tight from a good workout or a lot of stress they make a snapping and popping sound. I roll my shoulders forward or back, swing my arms around and they go "pop, pop, pop". It's not the joint. It's definitely in the muscle. Sometimes if I do it enough it gets less and less and goes away. I have searched the internet to figure out why it makes that sound and feels that way but can't find anything. Does anyone know?

Sorry, I'm not a doctor or a nurse, but I was thinking that maybe your muscle is just snapping into place and out of place? Just a thought. I hope you figure it out.

my hip clicks/pops and my doctor told me it was nothing to worry about, it was just the muscle moving/flicking over the bone rather than the joint clicking. Maybe its the same for you? Maybe as you move it, it gets more relaxed and stops being a tight kind of band/knot flicking across the bone and moves more smoothly. I dunno, these are just my guesses

I used to have knots in my legs that would pop-started doing yoga and haven't had any since

i dont know lol but i emailed my chiropractor friend so we'll see what he says =0P

It could be a few things...the first thought that came to mind is the knot moving over muscle or affecting joints or other muscles. The second thing that popped into my head would be you breaking up scar tissue and fibers as you move. You can literally hear a crunch when Chiropractors and Physical Therapists manipulate those kind of areas. Like with frozen shoulder or a muscle injury. The fibers need to be broken up, so they will sometimes use instruments to do a deep tissue massage and you can hear crunching sometimes.

I don't know if it is anything to worry about. I myself have issues with my joints cracking and popping, especially when I exercise. I do find they get better when my activity level is normal to high. The muscles get stronger and can support my back and other muscle groups more efficiently.