Man's conscious state is an awareness of body and breath. His subconscious state, active in sleep, is associated with his mental, and temporary, separation from body and breath. His superconscious state is a freedom from the delusion that "existence" depends on body and breath. God lives without breath; the soul made in his image becomes conscious of itself, for the first time, only during the breathless state.
Paramahansa Yogananda, Autobiography of a Yogi
breathless, sleep, soul