Yesterday night I attempted to WILD. I have an app for the iPhone called i-Dose, which is a binaural brain wave app. It certainly helped get closer to lucidity, however I began to freakout. I was laying there and I began to feel numbness throughout my body. Soon enough I began feeling light-headed and felt as if I was spinning. While all of this was going on, my breathing increased and so did my heart-rate. I started getting really nervous and the feeling of being light-headed slowly faded. I tried again but I just couldn't attain that feeling again. Also at some point when I did not feel my body and my head began to spin my hand moved by itself, I was not intending to move it, nor was I thinking of doing it, which was really weird . Any tips, pointers?

On a side note, just saw Inception, great movie.