If people switched day and night activities, things would get pretty interesting. First, our sleep schedules would be all over the place, and it could mess with our health. Energy usage would change, with more power needed at night and less during the day. It could also mess with farming and wildlife, since they’re used to our usual routine. Plus, working at night might make it harder to stay focused, so productivity could take a hit. Overall, it’d be a big adjustment for everyone!