How Lucid Dreaming affects mental health


I would like to ask you about lucid dreaming (during sleeping we know that we are dreaming and we can do whatever we want). Having lucid dreaming requires some training (writing down your dreams, performing reality checks during day). Do you think that activities like lucid dreaming are bad for mental health? From one point of view we can train doing something difficult for us in real life while sleeping but on the other hand it may be that we are submerging in ourselves and alienate from the world as a result… What is your opinion on that topic?