The science behind the runner's high: run outside of your comfort zone, e.g. 30mn at 80% of max HR, to release endorphins, anandamide and indirectly dopamine. Reduces pain, promotes calm and well-being.
"There is something magical about running. After a certain distance, it transcends the body. Then, a bit further, it transcends the mind. A bit further yet, and what you have before you, laid bare, is the soul" - Kristin Armstrong #runningquotes #motivation