Tiz DS6 sleeps an average of about 10 hours - but he sleeps in most days because we homeschool (he usually sleeps till 8-8:30) - I think if he had to get up for his old normal routine of school, he would be a wreck! He doesn't ever wake up at the same time during the night - it's always different. We actually had a sleep study done on him to look for things like grinding teeth or apnea and they pretty much found nothing...just a little guy who wakes at the drop of a pin.