The human body produces cannabinoids on its own and has its own built-in Endocannabinoid system to mediate their effects. The Endocannabinoid system is responsible for regulating a number of important biological processes through two main Cannabinoid receptors: The CB1 and CB2 receptors.
CB1 receptors are found throughout the body but are most prevalent in the brain. They deal mainly with coordination, pain, emotions and mood, thinking, appetite, and other functions.
CB2 receptors are found in the immune system. They deal mainly with inflammation and pain.
In summary CBD helps your endocannabinoid system function properly and stay in homeostasis.