This could be due to their already more effective release of endorphins in comparison to those who are more pain sensitive. (sciencedaily.com)
Meanwhile, the rich flavor of chile peppers was heavenly enough to keep us chomping through bites of fire, while the rush of endorphins surged through our bodies like volts from an electric chair. (burn-blog.com)
Studies have shown that religious ceremonies increase the production of endorphins in the brain, which give a feeling of well - being and even euphoria. (religion.blogs.cnn.com)