The incoming visitor in the gallery leaves behind a part of themselves, a part of their basic cycle - their breath, as an invisible footprint showing they were there.
In the "newly" created gallery space a conscious act, our own breath, fills the gallery. We become a visible part, where we have helped to create a work of art. We are entering into interaction with other visitors, moving through space, thinking about our own presence. However, we are still spectators, viewers of the art work.