Rajkumar was best regarded by Kannada audiences and the Kannada film industry for being a highly disciplined man in both his personal and professional lives. He practised Carnatic music for an hour each day in the morning and in the evening. He was referred to as "Gaanagandharva" (translation: a heavenly singer). His punctuality is another noted aspect. Waking up every morning at 4 am, he performed Yoga and Pranayama, which is said to be the reason behind his physical and mental fitness. His Yoga performances can be seen in the first clips of his film "Kaamana Billu". His waist size was 32 at the time of his death. This fitness is attributed to his practice of Yoga.