The electromagnetic field of HI-EMT can target the motor nerve cells and generate the action potential, which directly stimulates the muscle contraction. In the 30 minute course of treatment, the muscle contracts 30000 times with high frequency and intensity, which can not be achieved in general exercise! 3000W power with two body slimming machine High power version based on the original BTL company technology HIFEM® (High-Intensity Focused Electromagnetic) technology induces the body to supra maximal muscle contractions by themselves , something not achieve voluntarily by a sport exercise..syi