Some athletes get a runner's high, feeling a sense of euphoria as they push their bodies into increased physical endurance. Other people crave chocolate as if it were a narcotic. Still others go on yearly quests through muddy, desolate forests to find the elusive fungi known as truffles.

What do all of these "addictions" have in common? They're all simply human desires arising perhaps from our human endocannabinoid systems. These systems are made up of receptors and the agents that bind with and act on on those receptors. One of the agents your own body produces is a neurotransmitter called anandamide. Another is dopamine.

It turns out that exercise, chocolate and truffles also react with our endocannabinoid receptors, either by helping us produce the agents or by providing them to us when we eat.

Exercise really does trigger euphoria.

Runners have often talked of getting a deep thrill out of their sport at advanced levels, as have weightlifters and other athletes.

It turns out that regular, intense exercise stimulates dopamine production in the body by activating receptors in the endocannabinoid system. Dopamine is an organic chemical produced in your brain that helps regulate processes such as learning, physical movement and reward.

Anadamide is also released by your body during heavy physical exercise. Anandamide helps regulate mood adding to the euphoria of a great workout. It seems the human body already makes great use of cannabinoids to reward us when we take care of our health.

Chocolate is just like a drug.

In a good way. Just like some drugs help your body compensate for agents it lacks, so does chocolate supply health friendly substances to your body.

Scientists have long known about antioxidants in chocolate, like flavanols that help prevent aging and increase blood flow to the brain.

Now they know that chocolate also contains the bliss agent anandamide. No wonder some people crave their cocoa.

Truffles want you to eat them. Really.

The fungi balls known as truffles are considered a delicacy around the world. Humans have devoted years to finding the elusive and expensive treasures, training dogs and even pigs to root out colonies.

They may be drawn to more than simply the smoky, earthy taste of the truffles, however. Researchers know now that even the lowly truffle makes anandamide. The truffle has no receptors for the anandamide, however, leaving researchers to speculate that the fungi are producing anandamide for you. And for the other animals that eat truffles and thereby spread the spores around.

If they make you feel so good when you eat them, logic says you'll eat more. And the whole world will become one giant truffle garden. At least, that's what the truffles - and some people - wish would occur.

If you don't like breaking a sweat, you detest chocolate and you think truffles look disgusting, there are other ways to get the benefits of cannabinoids. CBD hemp oil for sale is one product available to consumers looking for ways to stimulate their endocannabinoid systems. The hemp oils are used for a variety of reasons or  are used to treat skin or cosmetic issues.