A training aid stimulator (100) for providing fast perceptive feedback, the training aid stimulator comprising - a first skin electrode (135) for making electrical contact to the body of a user, and - a second skin electrode (137) for making electrical contact to the body of a user, - a body capacitance charging module (125) connected to the first skin electrode (135), - a discharge module (160) connected to the second skin electrode (137) for a feedback discharging of a body capacitance, and - a processor (110) connected to the body capacitance charging module (125) for controlling the charging of a body capacitance, C BODY , to a predetermined first voltage level, wherein the processor further being connected to the discharge module (160) for controlling a feedback discharge of said body capacitance, C BODY , wherein the stimulator further comprises a measurement module (150) for measuring the level of charge of said body capacitance, C BODY , and wherein the processor (110) is configured for keeping the stimulator ready to discharge by repeatedly measuring the level of charge of said body capacitance, C BODY , and by providing a maintenance charging when voltage of said body capacitance, C BODY , is at or below a predetermined second voltage level.
