For instance, I have ataxia (Amy's blog talks about cerebellar ataxia, but from what I understand, my stroke didn't touch my cerebellum). My physiatrist has noted my ataxia seems more noticeable now than a few years ago, but we haven't talked about why that might happen.
This is my theory about it: the ataxia is a good sign of pushing to the limits of my range of movement. Very slowly, I'm gaining more range of movement. But each millimeter (or so) of increased range takes a huge amount of effort and exercise. It takes a while for my muscles and joints get used to the new way of moving. The ataxia gets better with exercise--until I gain a tiny bit more of range of movement, and the cycle will start again.
That's my theory.
I made a video to show how tiny changes of position can set off my ataxia. The video is probably confusing, because I blabber on about "good" and "bad" positions. When I say a position is "bad," I mean that I'm compensating a lot for weak muscles (even though most viewers can't see much a difference); a "good" position challenges my stability--leading to more strength in the long run. I think.