Lucid-dreaming is not to be awake when you sleep, but to be aware when you dream.

The difference? I can say, that I'm always aware when I dream, I'm in complete control of my dream-body, I just rarely realise that I'm in a dream. Point being, if you can think you are awake in a dream (which we do most of them time), then can't you also think that you're dreaming?

Unlike stuff like telekenisis and all that other stuff, the science and explenations behind lucid dreaming makes perfect sense.