Brushing is a hard thing to break

So here's my New Years resolution- to stop moving my arm when I brush my teeth with an electric toothbrush.

I just got a new Braun electric toothbrush for Christmas and no matter how hard I try, I cannot stop shaking it around like a normal toothbrush.

I guess for some 25 years I've been doing it the same way and all the sudden this thing comes along and poof- I don't have to do the work anymore.

My arm hasn't figured it out yet. It knows I have a toothbrush in my mouth and it's going to brush with it, dammit.