I attempted the WILD after about 4 hours of sleep. It's not that I felt numb, but I'm thinking that my body just skipped being numb to feeling the sinking sensation along my body. It felt wierd, but in a good way. I think that I became too aware of the sinking and it went away because I got too excited. I was completely still, in a comfortable position. Thanks for the advice!
Hmm. How long did you stay awake before attempting the WILD? Did you just wake up 4 hours later and just lie still and go right into the WILD attempt? Or did you completely get up for 5 minutes or more? If you got up at all, you shouldn't have been able to "skip" over the numb sensation (sleep paralysis), because your body needs to be numb and in SP before you dream, otherwise you will actually "act out" your dreams (check out Wikipedia's article on SP).

And how long did you lay still before you aborted the attempt? It can usually take between 20 and 40 minutes (maybe even more) to get to the deep stages of SP whereas you start the dream transition. You have to feel as though you "don't know where your body is" (this is hard to explain)—for example when I'm in the deep SP, pre-dream stages, I feel as though my hands are actually under my body or through the bed rather than at my side. This is a sign that you're ready to "exit" your body and use your dream body. I suggest being more patient and waiting longer until you feel more sensations. The early "sinking sensation" isn't always a sign that a dream is near.