Body twitching as border reinforcement

[Telepresent]

Hi all, just had a thought. I've noticed a number of posts from people asking about their body twitching and the like during mediation. Just now I was alternating between writing and sitting, investigating the (seeming) physically-felt boundaries of self, as opposed to other. As I felt like something was dissolving, boom! A head spasm snapped me back into 'normality'.

I then remembered something my therapist told me: infants require movement in order to help them develop a sense of sense, and the boundaries between themselves and others. This is one of the reasons we bounce them. 

So it might be that these twitches and spasms are a psychological defence mechanism to stop us from going too far away from our boundaried sense of body/self; of the border between 'me' and 'other'.