Practising his strokes for over seven million times has given him an unforgettable muscle memory and an uncompromising diet has kept his enviable fitness intact in an astonishing 25-year long career but Leander Paes is not training the way he used to train 20 years ago. The 43-year-old has just finished another season in his glorious career and he is not finished yet. Rather, he has set himself a new target - taking his Grand Slam tally to 20. Passion for the game and a knack for creating history has kept him going but it also involves pain of hard work that may become difficult to sustain year after year.