Every human possesses an advanced physiological system known as the endocannabinoid system. A network of receptors and neurotransmitters that help control some of your most vital life functions related to memory, appetite, mood, pain sensation, and the immune system.
CB1 receptors are primarily found in the brain & central nervous system, & to a lesser extent in other tissues.
CB2 receptors are mostly found in the peripheral organs, especially cells associated with the immune system.