Shirly Ballas in a lecture which I attended once said that she was going to acting lessons so that she could stand still in the Rumba for about four bars of music and not feel an idiot. At that time she had been at the top for several years and was still adding to her skills. If you can find the film Dance with me, Vannesa Wiliams in the film during a competition performing the Rumba, she stands still for some 10 bars of music. But then she is an excellent actress and also an excellent dancer. Just remember that every gesture every expression has been choreographed and practised over and over again by our best dancers.