I have very weak ankles. I've never injured them and I walk regularly, but I have a very unstable footing. This is affecting both my everyday life and aikido practice. I avoid running because i can fall easily, and i stumble regularly during my practice sessions (particularly in techniques where I need to move quickly, like iriminage). Whenever I fall, it feels like my foot suddenly stops supporting my body and my ankle bends to whichever direction I'm falling at.
Does anyone else have this problem, and are there any exercises that are used to specifically develop muscles in the ankles?