Lucid dreaming is exhausting. When I was younger I trained myself to maintain that thread of control as a fell asleep. It is an incredibly powerful experience to be able to command every aspect of reality. I didn't wake up rested though, it was the exact opposite. Managing both my own actions and decisions and the entire world I was interacting with wiped me out.
As a side note, it was much harder to learn to stop doing it, than to start.
As a side note, it was much harder to learn to stop doing it, than to start.