The 3 o'clock half hour nap can be one of the most frequent lucid dreams you will ever have. At least for me anyway. Its like the freak who likes to wake up in the middle of the night and cause drama with her ol man. Your tired stressed and have 30 mins to nap. You really dont sleep but your eyes are shut. This is Lucid dreaming people think about it. All you dreamers should no. For me some of them short power naps can feel like hours.