A method for modifying a driving simulator, characterized in that during at least one time segment of an actual drive, a chronological profile (1) of a biometric state of the athlete is determined, at least one chronological profile of a parameter (5) of a vehicle used by the athlete is determined, a relationship is determined between the chronological profile (1) of the biometric state of the athlete and the chronological profile of the parameter (5) of the vehicle, said relationship giving the change over time of the biometric state according to the change over time of the parameter (5), during a first training in the driving simulator a developing chronological training profile (2) of the biometric state of the athlete is determined, and during a further, second training in the driving simulator, the chronological training profile (7) of the biometric state of the athlete, modified by mental stimulation of the athlete according to the determined relationship, is made to approximate the chronological profile (1) of the biometric state of the athlete in the actual drive.