So was trying to LD the other night.

I was using SilverBullets guide and WBTB. Wierd thing is this happened as i was falling asleep at night AND after i woke up and went back to sleep after 5 hours.

Normally sleep on side or front, I was trying to sleep on my back. Wasnt very tired so it took almost 2 hours. About an hour in all of a sudden it felt like my body was super heavy being pulled down by gravity, tried to move a bit and couldnt, opened my eyes and after about 20 seconds i was able to move again. That happened a few times before i fell asleep. Same thing after WBTB. Sleep paralysis or just placebo?

If it happens again, what should i do next time?