At the end of each posture the body energy sinks. Check for 'ding xi' at the end of each posture with this sinking energy. Ding xi is fixed, stable standing as one stays upright yet not still. The chi settles in the body. The mind settles. In 'ding xi' the organs stay in the right place. The body is upright and is not winding or pulling. Sink the energy to the dantien. Settle down like a glass of beer in Ireland.