My Strange Experience #12

During a period of about 5 years, I noticed upon awakening in the morning that the blanket I was sleeping under had been neatly folded back, leaving me sleeping under a sheet only. I can recall many times waking up early in the morning being cold and having to pull the blanket back over me. There was no pattern to these events, but it seemed to happen three or four times a year for about 5 years in total. It has not happened in the last fifteen years however. Perhaps there is a certain age when we humans are no longer considered interesting?