Sriimurali is set to present on screen what he feels is the role of his lifetime. "The prep for Bagheera has been the toughest ever. I am tense and excited, it's a mixed bag of feelings as I have given three years of my life to it. I had to tone up through workouts and strict diets. No sweets, no curd, no ice cream was what my trainer instructed. Maintaining this look for three years is no joke..