He sat tapping his fingers at the edge of a long table.  He then dropped both elbows on it.  Soon, he stood up and leaned lightly against the table, till, finally, he simply sat on it.  Other such disjointed physical movements followed.  He had always recognized their importance to him.  When he felt his day bogged down, at a standstill, the mere switching of positions and postures generated in him an urgency, a sense of time passing by, enough for him to then take a next step.