[hifumi]

> I could see a lot of people on HN enjoying rock climbing. Each route you climb is essentially a puzzle to solve.

That must be why I love climbing so much. It requires such focus and determination, and there's an immediate sense of progression that isn't seen with weight-lifting. When I got home from college there wasn't a rock climbing wall near me and I don't live near mountains. So I started climbing concrete structures in the city parks. It eventually turned into a game about movement and finding the fastest route. Then I learned it was already a sport called Parkour.