My body's internal clock does not sync with my actual schedule, and it refuses to adjust. Ideally, my body wants to go to sleep around 1:00am and wake up by 9:00am. But during the week I have to be up no later than 7:00am to go to work. I physically cannot go to bed before midnight, so I typically average 6-6.5 hours of sleep most of the time. I also don't fall asleep easily and must sleep with the TV on to provide adequate white noise. I can't sleep in silence because all of the random little noises, thuds, creaks, etc. just make me paranoid and keep me up.