A device for reducing kinetosis-related disorders of an occupant of a vehicle includes a vehicle seat with a headrest. A seat belt is assigned to the vehicle seat which is configured to increase a connection of the occupant to the vehicle seat before an onset of an acceleration. An actuator system is coupled to the headrest which is configured to move the headrest automatically, at least in sections, counter to an expected direction of an acceleration of a head of the occupant before the onset of the acceleration. The seat belt is tightenable by a reversible belt tensioner before the onset of the acceleration.