Don't get the burning feeling or pain that one usual feels when that happens. My arms can get that way, but don't feel it in my legs. Just weakness and the leg shakes. (hubby has begun to nickname me "the bunny")

They are similar to tremors, but faster and more short lived then the ones I've experienced in the past. But the more I think about it, the more I guess it's from movement. Possibly muscle fatigue.

Thanks everyone for your input!!!!