Okay, firstly, as most other people said don't give up lucid dreaming! These things can happen occasionally, especially early on, but really don't continue after some practice.

Anyway, I would agree with the theory that you were just moving like that because you (mentally) thought you had not moved for 10 days. There wouldn't be any physical problems, though. Just completely because of the extended time of no movement you experienced.

Anyway, happy LD'ing,
-Metroid48