The runner's high is understood to be a endocannabinoid/endorphin cascade. https://www.scientificamerican.com/article/new-brain-effects-behind-runner-s-high/ h

The runner's high is understood to be a endocannabinoid/endorphin cascade. https://www.scientificamerican.com/article/new-brain-effects-behind-runner-s-high/ https://www.scientificamerican.com/article/new-brain-effects... Dopamine is mostly involved in anticipatory qualia.