ParanoiDave, it is okay to change positions. In fact that’s what I normally do. I like to sleep on my left side. When I’m working on the exercise I lay flat, then upon finish I roll to the left side so I can quickly fall asleep. It is important that you feel comfortable in either position though.
Thank you Zzz, glad it helps. When you felt you were swimming, which actually happens quite commonly among people, you should have stopped the repetition and focused on increasing that sensation. My own experience is when this swimming sensation occurs, it will eventually rock you back and forth so hard that you literally get ejected out of your body! Very cool trick!
Thanks thebotanyofsouls, the advice you gave on how to scan for body sensations is very useful!