The flow of the breath and flow if vital energy around the body are the two foundations of graceful conduct. All living creatures breathe unconsciously. But if we focus our attention on our breathing, we see it is also a means by which the vitality ('chi' or 'ki') of the heavens and earth enters our body.
The vital energy you breathe in concentrates at a point below the navel called the solar plexus. When this energy fills the solar plexus area, both your mind and body become energised and clear. A mind with clarity and energised body are the foundations of a beautiful temae and all graceful conduct within the tea room. It doesn't have to stop there. A true chajin is a chajin both inside and outside of the tea room.