Very few people ride bikes on the college campus where I work in the Bronx (Manhattan College, misleadingly named). It is built on an extremely steep hill made of granite. One of the streets isn't a street for a portion, it's an eight-story-tall set of stairs. In most cases other than the quadrangle, each building is a lot higher or lower than the adjacent building. I'm one of the few who cross the campus on bike. I see a handful of male students getting around on skateboards. I love watching them. It's poetry in motion. Just going around campus on foot can give a person plenty of exercise.