I don't know how to best describe this...but it happens in the morning. Mostly it's a involuntary movement of my left arm, but also a similar thing with my head. I don't think it's spams because there's no pain...just that my arms shakes or move for 1-2s...the same with my head. Also it's usually happens when I'm half a sleep in the morning.
Anybody with something similar? Is it anxiety?