The painkilling effect of placebos and acupuncture as well as the "runner's high" and the euphoria associated with childbirth are explained by the release of endorphins.

Question

Quizplus · Accepted Answer

Endorphins are natural painkillers produced by the body. They are released in response to pain, stress, and physical exertion, such as exercise, and are responsible for the painkilling effects of placebos, acupuncture, and the euphoria experienced during a "runner's high" and childbirth.

The Painkilling Effect of Placebos and Acupuncture as Well as the "Runner's