So last night as I was attempting a WILD, I thought I was drifting into SP. I was trying to WILD at about half 3 in the morning, as I went to bed at about 10. I was lying there, completely relaxed, and as I am very impatient I gave up. So I rolled over and after about 10 minutes I started hearing this VERY loud whistling/vibrating noise in my head. My limbs started to feel groggy, so I realized that I was drifting into SP. I lay there and after about 5 seconds the noise stopped. After this I was left feeling not tierd or anything... Any ideas on what it might have been?
DB