Motion training aid with stimulator

A biofeedback stimulator comprising

• a first skin electrode for making electrical contact to the body of a user, and
• a second skin electrode for making electrical contact to the body of a user,
• a body capacitance charging module connected to the first skin electrode,
• a discharge module connected to the second skin electrode for a feedback discharging of a body capacitance charged by the body capacitance charging module, and
• a processor connected to the body capacitance charging module for controlling the charging of a body capacitance, CBODY, to a predetermined first voltage level, wherein the processor further being connected to the discharge module for controlling a feedback discharge of said body capacitance, CBODY, through the skin via the first and second electrode,
• wherein the biofeedback stimulator further comprises a measurement module for measuring the level of charge of said body capacitance, CBODY, and
• wherein the processor is configured for keeping the stimulator ready to discharge by repeatedly measuring the level of charge of said body capacitance, CBODY, and by providing a maintenance charging by activating the body capacitance charging module when voltage of said body capacitance, CBODY, is at or below a predetermined second voltage level.