That's a natural high!!! Anyways, I made this through Wikipedia:

This is a list of what the receptor interacts with.

basal ganglia are a group of nuclei in the brain associated with motor and learning functions

The limbic system is a group of brain structures that are involved in various emotions such as aggression, fear, pleasure and also in the formation of memory.

(which affects),

The endocrine system is a control system of ductless endocrine glands that secrete chemical messengers called hormones that circulate within the body via the bloodstream to affect distant organs.

and

In contrast to the voluntary nervous system, the "involuntary" or autonomic nervous system is responsible for homeostasis, maintaining a relatively constant internal environment by controlling such involuntary functions as digestion, respiration, perspiration, and metabolism, and by modulating blood pressure.

ALSO:

Cannibinoid receptor are found in:

The cerebellum (Latin: "little brain") is a region of the brain that plays an important role in the integration of sensory perception and motor output.

and

A sex organ, or primary sexual characteristic, narrowly defined, is any of those parts of the body (which are not always bodily organs according to the strict definition) which are involved in sexual reproduction and constitute the reproductive system in a complex organism;

and cannibinoid receptors are absent in:

The medulla oblongata is the lower portion of the brainstem. By anatomical terms of location, it is rostral to the spinal cord and caudal to the pons, which is in turn ventral to the cerebellum.

(This fact means...)

there is not a risk of respiratory or cardiovascular failure as there is with many other drugs.


(that was CB1's, CB2's, found mostly in the spleen affect your immune system.)