Came across this article about sleep patterns being related to hormones: http://www.slate.com/articles/healt...ool_should_start_later.html?wpisrc=most_viral As long as I can remember I've been a natural night owl. I can stay up comfortably and be very functional until about 3 a.m. or later, provided I can sleep in until about 11. Which of course rarely happens anymore. Conversely, waking up earlier than 8:30 is torture even if I go to bed early and get the same amount of sleep. When I took all day tests in grad school, my test scores rose steadily as the morning progressed. IOW, I am zombie early in the morning. I think it's genetic--my grandmother was one. We would stay up laaaaaaaaaaaaaaaaate together and watch movies when I was a kid on summer vacation. My son is a natural night owl too but finds it a lot easier to wake up early, especially if he has something exciting to look forward to. A good friend is an insufferable early bird, all perky and chipper at 6 am, a zombie at 10 pm. What about you? Thoughts on this? The article?