The Endocannabinoid System (ECS) is a complex cell-signaling system found in the human body. It plays a crucial role in regulating various functions, including mood, sleep, appetite, and immune response. The ECS consists of endocannabinoids, which are naturally occurring compounds, receptors that these compounds bind to, and enzymes that break them down. The two main types of receptors in the ECS are CB1 and CB2. CB1 receptors are primarily located in the brain and central nervous system, while CB2 receptors are found in the immune system and peripheral tissues. The ECS helps maintain homeostasis, ensuring that the body functions optimally in response to changes in the environment.