I slept quite late a few days ago. 4 or 5am just slept, and then woke up at 12 or 1. Unhealthy life style huh? Not I don't want sleep, but I can't sleep. Reason being I think too much. Hope that tonight will be a good sleep for me. Usually I close the light on 12 or 1, but I really felt into sleep on 3 or 4. Hope tonight will not be a late-night-sleep for me again. =(