PURPOSE: To activate efficiently the human body receiving a magnetic field generated around a heater while users are heated by superimposing a sound signal preferred by the users upon DC current supplied to the heater of a electric bedding body with a music reproducing device to generate the magnetic field around the heater according to the sound signal.

CONSTITUTION: A microcomputer 7 compares the temperature of an electric bedding body 6 detected by a temperature sensor 9 with the set temperature to energaize and deenergize a relay coil 8 for removing the temperature difference and adjust a DC power amount supplied to a heater 5 for controlling the temperature of the electric bedding body to the set temperature. On the other hand, when a cassette tape having music recorded thereon is set to a music regenerating device 10, music recorded on a magnetic tape is converted to an electric signal and amplified by a main amplifier to be sent to a transformer 16 for superimposition. The transformer 16 for superimposition superimposes a sound signal on DC voltage supplied to the heater 5 to generate a magnetic field corresponding to the sound signal around the heater 5.