"runner's high"の定義と意味

What is a "runner's high"?

A runner’s high is a feeling of euphoria or intense happiness that some runners experience during or after a long run. This sensation is often linked to the release of endorphins, which are chemicals in the brain that reduce pain and stress, creating a sense of well-being. It can make a runner feel energized, relaxed, and even mentally clearer. Although not all runners experience this feeling, it is often associated with the satisfaction of completing a challenging run and the physical benefits of exercise.