Why do people gesticulate when talking on the phone? It's not like anyone can see them doing it? Who does it benefit? To me it seems like a very unusual habit. Which is why I can't understand why I seem unable to stop myself from doing it.
Even as I type, I will at times pause and point at the screen with one finger to sort of get my baring and make sure I know what's going on. If I don't do this, I cannot continue. If for some reason I was not allowed to gesture with my hands, my brain would stop working. I could not think, type or talk.
As far as I can tell my brain runs on the kinetic energy. The source is generated from the motion created by my hands and arms. Without that energy, blood would stop flowing and my thought train would derail. I can go long hours without moving my arms, but subsequently no thoughts would pop into my head. Additionally I can think without talking, but I must move my arms. I can be seen in a crowd, rubbing my nose, waving my hands and gesturing at the sky. Ignore it, I'm just thinking.
It occurs to me as I write this that there might now be an explanation as to why I seldom dream. Normally I'm a very heavy sleeper and as such almost never move. I usually only dream if I toss an turn all night, but mostly this isn't the case. I cannot relay to you the number of times my wife has said to me, "I thought you were dead last night." To which I say "I'm sorry." She will then follow that up with something like, "If your back hurts today, its because I started pounding on it last night till moved."
Some people might see this as an affliction, but not me. I feel that if I have to put a little real energy into my brain to keep it cranking out the esoteric nonsense, that normally flows from it and prevent me from drooling all the time, then it is worth it. By the way, I just spread my hands open wide and beckoned to the sky with them. As if to say, "The end."