The present invention relates to a treatment device for generating a time-varying magnetic field for body shaping of a patient, comprising a control unit (42), at least one connection for at least one energy source (33, 38), at least one energy storage device 35, 40), at least one switching device (34, 39), and a plurality of applicators, each of the applicators comprising a casing (6) and a magnetic field generating device (36, 41); Each of the applicators being configured to remain in direct contact with the patient by a positioning member, the body region comprising: a thigh; Saddleback, buttocks, abdomen, buttocks, tummy area or arms; At least one energy storage device (35, 40) having a capacitance in the range of 5 nF to 100 mF is charged by at least one energy source (33, 38) at a voltage of at least 100 V and an inductance in the range of 1 nH to 500 mH A magnetic flux density in the range of 0.5 to 7 tesla, a repetition rate in the range of 1 to 700 Hz, an impulse period in the range of 3 to 3000 s, at least 300 The control unit 42 is configured to generate an impulse of a plurality of time-varying magnetic fields having magnetic fluxes in the range of 70 to 60000 Tcm <; 2 >; and a maximum value of the magnetic flux density derivative of T / s to 800 kT / 40 from the energy storage devices 35, 40 to the plurality of magnetic field generators 36, 41 or from the at least one energy storage device 35, 40 to the plurality of magnetic field generators 36, Do not offer (34, 39) so as to form a plurality of magnetic pulses, each constituted by one impulse of a time-varying magnetic field sufficient to provide sufficient energy to induce muscle contraction, and a magnetic field not having a magnetic field or insufficient to induce muscle contraction ), And the control unit (42) is configured to combine a plurality of subsequent magnetic pulses into a train that lasts for a first time period and to cause at least one switching device 34, 39), and the control unit