Once the red LED light has increased the cell’s energy production, each cell within the treated area begins producing new cells to replace the cells of the injured tissue. In his paper Mechanisms of Low-Level Light Therapy, author Michael R. Hamblin reported that once ATP production increases, so do a cell’s production of fibroblasts. These cells provide the building blocks of the body’s connective tissue, producing collagen and other soft tissues and making increased fibroblast creation particularly helpful in treating sports injuries involving torn tendons or ligaments. Find out how Photizo light therapy can bring you relief from injuries.