Do You Like Sleeping?

It's funny how internal body clocks work. It happens with me all the time but not usually quite so pronounced as today:

I first woke at 05:00, within a minute or so - too early so I went back to sleep. I next woke at 05:30, within a minute - too early. I next woke at 06:00, to within a minute - too early. I next woke at 06:30, to within a minute - too early, sleep again. I next woke at about three minutes to seven - I got up.

Was my mind setting a timer or calculating the time or was I having an out of body experience and floating up to look at the clock? I do have to physically raise my head to see it as I cannot from where I lay.

Strange