Meditation may be seen as a do nothing discipline, but non-doing is by no means doing nothing.
Traditional seated meditation asks you to be deliberate with your attention. You focus on a single aspect of being: the ebb and flow of your breath, the inner space of your heart center, or your non-attachment to thoughts and sounds. You are becoming conscious. And although the end result is to be able to do nothing extraneous, in and of itself, it is not nothing.