Way back in the day before electricity and artifical day in night, people would go to bed with the sun, rise with the sun. It wasn't unusual to wake in the wee hours for a little while, they'd get up, do some chores and go back to bed for a few more hours. If you are waking up around that time for a little while every day, rather than looking at it like its something bad, you could use the time to do some meditations, knock them out for the day...