I have never had a lucid dream. A dream which you can control. To be honest I don't 'see' dreams that often. A couple of times a year at best. The longest I haven't seen a dream for was 2 and a half years. But back to topic.
I wonder what exactly you can control during lucid dreaming. Can you control things like perception of time and space? What if you can control your own memories, as in remembering things you have long forgotten or even things you shouldn't remember? Would it be possible to make sure that you'll never forget what happens during luis dreaming?
And let's say the things above are possible. Then what is the limit of these abilities, and what happens to your physical body when you push these to the limit?