internal clock

It has been a goal all year to try to get more sleep. I usually get 6 1/2 hours of sleep per night (except Monday nights when I usually get 5 1/2 hours) and I'm generally tired. I have read all the health benefits of getting 7-8 hours of sleep per night - weight loss, healthier heart, etc. So, I have tried.

However, maybe it's been too many years of too little sleep because I seem to wake at 4:30 am no matter what.

I was excited Tuesday night because Jazzercise had been cancelled for Wednesday morning. I could sleep in. Hah! I woke at 4:30 anyways.

I am currently on vacation in San Diego. What time did I wake up? 4:30 am.

Drat my stupid internal clock! What will it take to reset it?