Its got a lot more too it than is discussed currently. It seems simplistic on the outside but when you know how to use it and discover that its only a starting point to what you gain by practicing it. I have explained to some people that it also has aspect changing properties, where it can be used to cause any scenario or desired effect to appear in your dream, and on the other side it can be used as a psychological tool that can permeate understanding from your dreams into waking reality. Think about how many times something made perfect sense when you were asleep and when you woke you did not understand it anymore. Its a good ride if you can focus on it and stick it through until the end.
If you can work with it and don't give up, after a few months your brain will find it so easy to reality check you don't even need to do it physically. You will just twig it whether you are awake or not, I believe that after a few months / year or whatever your brain will actually change shape / neurogenesis. I think at this point is where you don't even have to do any exercise or think about it consciously, it will have got so ingrained that you will be lucid in your dreams most of the time through pure conscious reflex. This is where the beauty of this comes in if your able to keep with it..
