The CB1 receptors are mostly present in the brain, but some are located throughout your body. These receptors deal with movement and coordination, emotions, thinking, memories, pain, mood, appetite, and other function. The CB2 receptors are mostly in the immune system. They affect pain and inflammation. CBD works in two ways. It attaches itself to these receptors while stimulating the body to produce more cannabinoids on its own naturally. Amazingly, CBD assists the body in learning to heal itself.