HI there, I get the trembles too. But they seem to be more inner than anything else. And I notice them the most after I go to bed, or lay down to have a nap. I also get them right after I wake up, or have been laying down for any length of time.
Also, and not always, when I walk any distance at all, I get a tingling feeling around me knees, does not last long, and does not hurt, it just feels funny
Have a nice day,