How did you find out about the enzyme, just a regular blood test? I have restless legs, and it drives the spousal unit nuts. Sometimes, I have to get up in the middle of the night, stretch my legs, one at a time, and just hold them stretched for a couple minutes, to make the jumpiness go away. It usually works long enough for me to at least get to sleep.
It drives me nuts. I've been this way as far back as I can remember, and have just learned to live with it, for the most part.