For most of the Summer I have had my alarm clock (well alarm cell phone that plays “Don’t Wait” by dashboard confessional) go off at 6:50am. After a few weeks of getting up at 6:50, I began waking up before the alarm clock even went off usually by only a minute or two; meaning I will wake up, wonder if I either did not remember to set the alarm and or slept through it, then look at the time and it will inevitably 6:49 or 6:48. What seems strange to me is that it does not matter when I went to sleep. I could go to sleep right after a sox game ends at 11pm or go to sleep at 3am after going out someplace or finishing a book and I still will wake up at 6:48. Is this a common experience for people?