This technique can affect the very iron in the blood of a living being. He uses this effect commonly to hold people immobile, to lift them, throw them about, or even causing anemia, weakness, or fatigue. Hemoglobin contains, at the heart of the protein structure, six iron molecules, one per subsection. These iron molecules are in a certain ionic state; that is, they must be Iron 3+ molecules. Stampede of Thunder can change the ionic state of these iron molecules to Iron 2+, which renders the hemoglobin inactive, and red blood cells incapable of carrying oxygen.