I recently moved to San Diego from Central Europe and because some of my projects are based in Europe, my mornings (well if we can call them like that) are a bit tough :) as I wake up at 3:35 AM in order to be available to my European team during noon.
It is very surprising though, how a body can adapt to situation like this and after some adjustment period you feel rested even after 4-5 hours of sleep. The key for me is:
1. do a physical activity at least 4-5x times per week - swimming or running. 2. use Sleep Cycle app for iPhone 3. take my favourite DMAE pills 4. eat healthy