Maye like nervous ticks. Self-comforting behaviors--this sounds better, I think.
I just don't pay it much attention. My son does shake his head a bit back and forth when he's in his zone--I imagine he sees imagery in his head like a movie. It's just what he does. Someone else might bite his/her nails, squint, bite his/her lip, jump up and down, shake a leg, tap toes or fingers, click tonuges, whistle, blow air out, sniff, snort--it's what makes us human. Who sits, completely still, all day? This seems abnormal to me!! !! In fact, if I see a young child, especially a boy, that is too still or slow or immobile or hestitant, I conclude that he's medicated. We are all filled with energy (kids moreso) as we should be! It's called being alive.
equinn