In addition, every year FIA will arrange winter tests before the season, some cars will be arranged in the long gap between races in the season (3 weeks), and there will also be tests during the summer break. Basically, these are the test sites stipulated by FIA, and teams usually have their own private tracks, such as Ferrari, and even two private tracks (Feola and Mugello). Drivers will be familiar with the car and improve their skills in each test.
Another very important method is the racing simulator. Now many teams are familiar with the track with simulators. The core of the simulator is similar to the RFACTOR game produced by ISI. On this basis, each team will calculate various parameters about the car according to the aerodynamic data and various simulation data of its own car, and compile them into various physical load simulators to achieve the minimum difference with reality.
One more thing, good technology requires good energy and good physical support, so drivers naturally often go to the gym.