" I don't think it's a coincidence that so many people are drawn to communities where they can pursue physical challenges alongside others. It's a joy to watch people to exert themselves, face their fears and overcome their obstacles.
(...)
Sometimes you are the one crushing the goal and ringing the bell. Sometimes you get to be part of the crowd that hugs and cheers the person ringing the bell. And sometimes it's enough to simply immerse yourself in a space where such a joyful noise gets made. "

― Kelly McGonigal , The Joy of Movement: How Exercise Helps Us Find Happiness, Hope, Connection, and Courage