Don't believe this, if it really works, the side effects will be very strong, because it is related to magnetotherapy radiation. Suggest a reasonable diet and exercise. If the waist is fleshy, I suggest you lose excess fat by running and swimming first. Add badminton and tennis at the same time, and the effect is better. If most of the meat is much less in the later period, you can do sit-ups, because there is too much fat in the waist, and people who do sit-ups are very tired.