Final answer:
Endorphins are indeed the body's own opioids, aiding in pain relief and inducing euphoria, especially after exercise, without the addiction risks associated with opioid drug misuse.
Step-by-step explanation:
Endorphins are indeed the body's own opioids and function similarly to opioid drugs such as heroin and morphine. These neurotransmitters are produced by the central nervous system and the pituitary gland. Endorphins play a crucial role in the body's pain relief and pleasure systems and can induce feelings of euphoria and well-being, a state sometimes referred to as a "runner's high" which can be triggered by exercise.
This happens because endorphins bind to the same neuron receptors as opioid drugs do, but without the risk of addiction associated with opioid misuse. Opioids, on the other hand, include both naturally occurring compounds and synthetic substances that are potent painkillers, but they come with a high risk of abuse and dependency.