It seems that my biological clock has been hard-wired to wake me at 7am every morning.

I do have to get up at 7 most mornings, but this morning I had the chance to sleep in... yet at 7am, there I was, wide awake.
This has saved my butt a couple of times when I've forgotten to set my alarm... but I am by no stretch of the imagination a morning person... this is a bad combination!
Anyone else who doesn't need an alarm clock?