It is not, in fact, a good article. A lot of the text is nonsense mumbo jumbo, a salad of words vaguely related to the topic but often used incorrectly. My guess is that the journalist just didn’t understand what the scientist said. The other possibility is that the scientist was high and was rambling incoherently.

This is a verbatim quote:

Yes, opioids bind to a class of receptors called endogenous opioids, which you find in endorphins, for example. Opioids bind to these receptors—just like natural chemicals do—which results in a response. In some cases, because of decreased sensitivities and certain types of pain, they may enhance a sense of euphoria.