My natural circadian rhythms would put me in bed about 11:30 or 11:45, and up again eight hours later, if I had my choice. I have occasionally gotten a late T.V. habit, but it was never worth it. However, what has always re-set my clock is marriage. I was married to my late wife for about 23 years, and she was a night owl. Ten years after I lost her, I remarried, and my wife is ... a night owl. Are women often night owls? Or do couples get set on different schedules from ancient times to keep the fire in the cave going? So I get to bed too late, and get up too late, but I'm the morning person, and was in my first marriage. I bring in the paper, feed the cats, and take coffee and the paper and later food to my wife. It's pleasant to have some time to wake up before I try to talk much. Up early is a great way to get work done, writing for one example, but I've never been able to schedule that to my life.