I am conducting a very important study for the good of Science and the Gishwhes Institute of Vital Statistics. What side of your mouth do you begin brushing your teeth on? Is it the same side that you write (etc) with?

I am conducting a very important study for the good of Science and the Gishwhes Institute of Vital Statistics. What side of your mouth do you begin brushing your teeth on? Is it the same side that you write (etc) with?