[t_mann]

Sure, but are those hours really wasted if they make you feel refreshed? Sleeping is very important in terms of long-term memory organization, health etc. I always felt that those life hacks of trying to learn new skills or solving difficult problems in your sleep were pretty short-sighted optimization attempts, since those hours are not "lost", but indeed very productive, only in ways we don't directly notice. I might reconsider if there is overwhelming evidence of the benefits of recalling dreams, until then I am very happy about what I've achieved in terms of getting restful sleep. In terms of lucid dreaming or facing distressing memories, I prefer doing those things in more controlled meditation or therapeutic hypnosis settings (for which we do have evidence that it works).