Energy
My favorite sport is urban night photography. maybe it isn’t a sport but it should be. I blend into the dark and lurk on street corners, propping my camera on garbage cans, parking meters and anything else I can find. The people that walk into my photos sometimes apologize but they shouldn’t. They will show up as blurry ghosts in the photo and they add the the scene. No matter how tired I am I can stay out all night. The energy keeps me awake.
I agree, night time is the best. You get some of the most amazing light then.