Do you ever mouth inaudible conversations with yourself whilst doing random stuff??

[somethingelseishere]

I've read that not only that but full-on talking to yourself
is just the brain's way of off-loading excess data-energy
kind of like defragmenting your hard drive and blowing
off mental/psychic steam at the same time.

Completely normal, most people do some version of that
to one extent or another.