Three Things

There is one of three things hapening(or maybe all three), my muscles are stronger from exercising and making my legs work better, my brain is slowly rebuilding the myelin sheath the stop the short circuting, or the electrical activity in my brain to control my muscles is creating a new way to get around the damaged areas.  The body has redundancies to fall back on if one system shuts down.  Keep exercising a damaged area, if you don't use it, you'll lose it.