According to the Sleep Foundation, my kid requires more sleep than I do and I can see that. She expends more energy in her day than I do. But, she also doesn't have any of the problems that I exhibit, so when she get 9-10 hours of sleep, it's a good 9-10 hours. I, on the other hand, according to the Foundation, only require 7-9, but that requires me to sleep a full 10 just to get it. Here's all of the factors that affect me.
Night owl - I have always been a night owl. From the earliest recollections, I've always been more wound up at night. That may have come from my father being a shift worker and me and my brothers staying up late for when he came home. It might also have been just a natural biorhythm that puts me out of sync with a majority of the world. I've never been a morning person. A good day for me is sleeping until 11am and then getting up and going by 1pm. I really hit my stride late in the afternoon and could stay up until 2am or 3am easily. This worked fine for the years that I was a club DJ, but doesn't work so well when you have a kid.
My ideal schedule would be to get to the point where I could go to bed at 8 PM and sleep all the way through with maybe one pitstop and wake at 6 AM. Hopefully, this would give me enough energy to work the whole day through.
*** While writing this post, I came across this article that describes how pre-Industrial Europe had two sleeps. Not exactly like naps, mind you. Naps mean you sleep as you normally would and then take a short twenty minute to hour nap after lunch to get your energy back up. In the Navy, we usually skipped lunch and went straight to our rack (bed) and called them Nooners. In two sleeps, you go to bed at dusk, sleep about four hours, wake for two or three, and sleep another four hours. I've read where Thomas Edison, didn't necessarily sleep, he catnapped. He'd sleep an hour or two, work a few hours, sleep a few more hours and so on. But he also was able to flexible with his lifestyle, unlike most in the 21st century.