Late recall, or daydream?
Yesterday, I woke up, because my alarm woke me up, and I got out of bed to turn my alarm on snooze, and went back into bed. I tried to remember my dreams, but I couldnt remember any, and I fell back to sleep. When the alarm woke me up nine minutes later, there was a very obvious, vivid dream that I had. When I woke up, I was almost positive that I had that dream within the nine minutes that I had been sleeping, because I didn't recall the dream when I initially woke up. But I know it takes way more that nine minutes to get into REM, so what happened here? Is is possible that I just recalled a dream that I had during the night, or was I just so tired that I went into REM extremely quickly?