I hurt my back when I was young. I had a plank fall on my back. Before I had the belt, I was limited to what I could do. The problem is bending over, and when I bend over, I go to straighten up and it hurts. If I feel soreness in my back, I can put the belt on and it's not sore any more. So I can function. I can do things. It frees me up. Why? I don't know, but it works. That's all I care. When I do some work, I used the belt, without being pumped up, for support, and it helps me. The belt works for me. I'm happy with it, and I don't know what I would do without it.