Do your knees make noise when you squat?

[Greystone]

Ya, mine go snap, crackle, pop!, every time. There's no pain at all. I have often wondered if it's similar to the cracking you hear when getting adjustments from a chiropractor. I remember one chiro telling me that it was essentially gas or something escaping when the joints shift by each other or something like that. I have no idea if that's legit or not.