Professional racecar drivers practice frequently to stay competitive in the sport. They typically practice on closed circuit tracks in order to work on their driving skills and to test out car modifications. Drivers may practice for up to 10 hours a day during race season. During the off-season, they may practice for fewer hours, but still maintain a regular schedule. Drivers also use simulators to practice and test out different strategies for racing. Overall, professional racecar drivers practice regularly to stay competitive and prepare for races.