Our family has a Yishengkang sonic instrument, which my parents bought in an experience hall. At first, I didn't believe these things. But my parents did feel much better after using it. My blood pressure is normal on the laboratory sheets of my two visits to the hospital, and my blood sugar and blood lipid have dropped. Then my parents let me use it, saying that it dredges the meridians and can be used by men, women and children. After using it for a day or two, the urine was obviously yellow and the whole body was a little sore. Then my mother helped me. After a few days, I felt much more relaxed and slept much better. Before sitting in front of the computer, my neck hurts less. In short, it feels good. Now I start making this instrument as soon as I have time. I don't know which part of your body you want to recuperate. There are too many health care products and instruments now, and there are many tricks, but there are also many that really work. It depends on your choice. Only after you have experienced it yourself will you know whether it is useful or not. Everyone's body mechanism is different. If you want to buy it, I suggest.