So I was at my school with my friend and told him the hallway was really plain (no photos on the walls.) and then I became lucid, a couple seconds after realizing I was dreaming everything became dark and I think I was back in my room still fully paralysed from the dream; it was a weird/cool feeling. Then I'm pretty sure I just instantly fell asleep. (don't really remember.) Does that happen to anyone else?? What should I do if it happens again?