I usually go to bed around 9:30-10:00. I have never been a strong sleeper. I always wake up during the night. For most of my life I have been getting around 5-6 hours of sleep, I know it's not much, but those few hours of sleep combined with power naps during the day has been enough for me. It is possible to train oneself to go with very little sleep. Meditation and power naps during the day will do a lot to keep me going if I don't get enough sleep during the night. I love getting up early in the morning.