We begin to breathe from the moment we are born. It is simply automatic. The sanskrit word for breath is prana. It is translated as "life force."
Practicing yoga offers the opportunity to notice and appreciate breath. Breathing is the natural cycle that offers us the rhythm for our movement. Every inhalation is followed by an exhalation, and again and again and again in a natural cycle.
I think about the seasons. I think about the ocean. I think about the cycles of life.