... inConcentrationOccurJust as the breath has a twofold rhythm which echoes the ebb andflow of the tides, the rising and setting of the sun, the up and the down, the in and out, the potential and the actual, the masculineand ... proximity to the center of the racket, the angle of the face, the distribution of your weight, and where the ball is met.If you listen closely to the sounds of one ball after another, youwill ... experiencing the movement of their feet.After the series of thirty balls, I noticed that there were no ballsat the net; they were all bunched together in the crosscourt areaon my side. "Look,"...