Now, why would we actually want to increase the blood flow to that infected area? Well for one thing we want to bring those special immune cells that are responsible for killing off those bacterial agents, those pathogens. And another thing we also want to bring the nutrients to that area because those cells in that tissue will be working harder. We also want to bring the chemicals that are involved in initiating and promoting the process of inflammation. So we have the bastards and the mast cells release histamine and other chemicals and that ultimately causes the capillaries to become more permeable and more blood to actually flow to that area as a result of the dilation of the blood vessels. Now, what else does that actually do?