I used to have trouble with my left knee, the pain got so bad over a period of one year that I couldn't climb up the stairs without dragging myself along the handrail. I couldn't walk without holding on to things, I couldn't squat or bend over. Then I heard about The Bioprotector, it was being promoted at an association I was with, and I wanted to try it out. I placed it under my bed as suggested, and within the first week I felt significant improvement, the pain was gone. Within a month and a half I was up and running so to speak, and now I can climb up the stairs to my second floor apartment without holding on to the handrail as well as carrying a load. I can squat, and if I sit on the floor I can get up without any trouble.