The principle of EMS fitness is to transmit micro-current signals to human body through EMS equipment. The frequency of micro-current signal is between 40HZ and 2500HZ (it belongs to middle and low frequency and can only act on muscle layer). The human body recognizes these current signals as bioelectrical signals of the human body, which stimulates muscle contraction and achieves the purpose of reducing fat and slimming. The whole equipment of K-EMS is divided into two parts, one is wearable equipment, and the stimulation point of micro-current covers 24 main muscle groups to achieve the effect of simultaneous movement of the whole body. The other part is the intelligent training equipment EMS package, which provides four modes: aerobic exercise, muscle training, medical aerobic exercise and medical treatment. The coach will also customize the training methods according to the physical fitness and needs of the students. When wearing the equipment, the professional coach will increase the "weight" of the muscle groups one by one (increase the frequency of micro-current) through the EMS suit according to the physique of different students. The whole training process lasts for 20 minutes, with exercise training in the first 15 minutes and micro-current massage in the last five minutes. In fact, K-EMS can be commonly understood as carrying loads for 24 main muscle groups of the whole body through current, which is equivalent to hanging sandbags with different weights on each muscle group. According to my personal experience, although I only did some simple actions, I was very tired after 10 minutes. It is reported that 20 minutes of EMS training is equivalent to exercising in the gym 120 minutes. It takes at least one hour to exercise deep muscles in normal fitness mode, while EMS exercises shallow muscles and deep muscles at the same time through the action of micro-current. K-EMS provides users with a weightless fitness method, which can avoid joint injuries caused by traditional fitness methods or physical injuries caused by incorrect exertion habits or lack of professional guidance. Many devices exist in the form of patches, and the frequency is generally between 20 Hz and 90 Hz. The disadvantage of this product is that the patch equipment can't exercise, and the equipment of 20HZ-90HZ can only do physical therapy, which can't achieve the effect of fitness and weight loss. The biggest advantage of K-EMS is its high efficiency, short time and low frequency, only two or three times a week, and at most one hour a week is spent on fitness. When students reach the fitness goal, they only need to do recovery training once a month. K-EMS can help urban white-collar workers lose weight, but professional equipment training is a necessary condition to keep fit.