WILDs are hard but fun even if you don't succeed. The feeling of heaviness in the legs is the first stage of Sleep Paralysis. There is partial paralysis and full paralysis. I say to myself "even if I wanted to move now, I couldn't, because I'm sooo relaxed. My arms and legs feel like lead." I can even feel the paralysis creep up my body to my face. It feels great. The best feeling is when you can't feel your body. You are just infinite mind waiting to enter the dream.
While you are practicing these at night, also try doing the Wake Back to Bed method in the morning. This is an easy way to get lucid.
Hey, I love Egyptian music. I play Doumbec and Al Oud. Just glad to heat an Egyptian here. Do you like Natacha Atlas?