I've got an odd thing I've notice developed with my dominate hand over the last few months...it pops and crackles.
I will feel a stiffness develop in my hand and I feel like I need to squeeze it into a fist to relieve it. I make a fist as tight as I can and kind of wiggle the joints by a variation of squeezing one area tighter than the others and so on. I don't use my other hand to pop it if you're wondering. It's just when I squeeze my hand into a fist I pop all of the joints.
I've noticed it pops and cracks all the way into my wrist bones. Also my knuckles look a little bigger than the other hand's knuckles.
There's very little pain just snap, crackle, pop, and it can be done repeatly.