I was lying face down but with my head turned toward a beautiful snow covered rolling plain. I was on one small hill looking towards another hill about a half mile away with several people on it. Fifty or so. They were having fun sledding, skiing, tossing snow balls, etc. I could hear their laughter and wanted to be with them. I was completely comfortable despite laying in the snow. The sky was golden and I could look at the Sun without being blinded. I was neither hot nor cold, completely content...except for the small desire to join the fun on the other side.
A voice behind me said "You have to go back". I have no knowledge where the voice came from or who said it, but I did end up waking back up in the "real" world. The experience was as real to me as this every day one. Like I said before, I've attempted to replicate the experience in many ways and even studied psychology in college. Still, no answers. My conclusion is there is more to existence than we know. Period.