I've just noticed this within the past year or so, but sometimes if I put weight on my right foot with the toe partially (but not completely) pointed, I hear and feel bubbly-ness? It's like air bubbles or something. It doesn't really hurt, it just kind of freaks me out a little bit. It only happens on my right foot, in the Achilles area, which is funny, because my right foot/ankle area has never been injured, and my left foot has (sprained and fractured at the same time). Is this some sort of problem..? I've been able to crack my ankles at will as long as I can remember, but I don't do it all that often, and I doubt that would have anything to do with the Achilles anyways. Any idea what this could be..?