At novice and intermediate competency levels you’re consciously considering what you’re doing as you plan it and do it. Conscious thought for most people is in the form of a semi-verbal “internal dialog” and is thus easier to verbalize to someone else. The downside of conscious thought is that you do it much more slowly and with much greater effort, but it’s easy to explain. For many subjects, once you’ve utterly mastered and internalized them, the way you think about them becomes largely intuitive, something you do in large part without conscious thought.