Perhaps I’m just more adaptable than other night-owls.
When I am left to my own devices, I stay up fairly late. This has caused no end of suffering, zombie-behaviour, surliness and frustration in my life.
However, when I was in Kenya for 3 months, I was up at 5:30am everyday. I was in bed by ~10pm every night.
The key, for me, seems to be getting enough sleep no matter what, and light levels. In Kenya, the sun rose every day around 5:15am or so, and I had to be up around 5:30am for cook crew about every six days. So my body just adjusted and I was up at that time everyday. Aside from whomever was on cook crew when I wasn’t, I was usually the only person up and about. It was amazingly peaceful, and some of my best photos came from that time.
Here in Chicago, I’ve been in a position to get up and go to bed whenever I damn well please (this will change, alas, I’m sure). I moved here in December, and quickly started going to bed rather late and getting up rather late.
I’m still not getting up all that earlier, mind you (about 8am), but I’m awake and not unhappy at 6am these days (as opposed to being awake and very unhappy at 6am in January). I roll over and go back to sleep, but I think I could adjust if I had cause or interest in doing so to a schedule that has me in bed at 10:30pm and awake at 6am for the summer.
I just respond to light very well. When I needed to be up before the sun previously (grar!), I eventually bought a dawn simulator. I love it and will never, ever give it up. I’m still not entirely happy about getting up in the mornings before the sun, but the chance of a morning slab of homicide with my cup of tea goes down a great deal.
I’d say get a dawn alarm clock if you can’t rise with the sunlight.