Sleep Paralysis!

So today was the first day I tried the WBTB method. It was pretty intense. I woke up at around 5:15 this morning and stayed awake until around 6:10. Along with stimulating the brain through reading, I preformed a few reality checks. Eventually, I attempted to go back to sleep. I started out at first only focusing on my breathing and pacing it as a form of meditation. I visualized my breathing and slowly I started repeating the phrase "Next time I dream, I will realize that I am dreaming." This is a form of autosuggestion and I am supplementing the WBTB method with autosuggestion as well as reality checks. I felt this heavy feeling start in my feet and slowly work its way up my body. It was as if someone was spreading out a lead blanket on my body starting with my feet. I recognized this sensation as sleep paralysis. Sleep paralysis is a natural "mechanism in the brain in order to prevent the movements which occur in the dream from causing the physical body to move." It was an incredibly odd feeling. My left leg was resting on top of my right leg (because I was lying on my right side) and it felt like my left leg was going to slide off because I wasn't using any muscle to hold it there (or so it seemed), but it never moved. I tried to get over the fact that I was paralyzed and kept repeating the aforementioned phrase. I probably slowly drifted in and out of consciousness but it was hard to tell. In addition, as the sleep paralysis was happening, I heard this buzzing sound in my head. I looked it up and it is often associated with the sleep paralysis phenomonon. This stuff is really exciting. I actually can't wait to try it again and possibly become lucid this time!