After midnight the city renegotiates its terms. The same plaza that hosted lunch crowds becomes a training floor with unlimited ceiling height. The rooftop deck keeps its skyline but loses its audience. Surfaces that were routes between errands turn into stations: a stretch of pavement for skips, a rail for holds, a flight of steps that finally belongs to no one's schedule.
The noise changes character too. Traffic thins from a wall into a pulse, and the sound of the rope striking the ground carries further than it ever could at noon.
Training at that hour is not about escaping the city but about accepting its second offer — fewer witnesses, a version of the same place that consents to be used differently. By the time the first delivery trucks sound below, the session is over, and the day resumes in a city that was briefly, quietly, in agreement.