Gene Mutation Tied to Needing Less Sleep - NYTimes.com

Gene Mutation Tied to Needing Less Sleep - NYTimes.com: "What distinguishes the two women in the study and other naturally short sleepers is that they go to bed at a normal time and wake up early without an alarm. The two women, one in her 70s and the other in her 40s, go to bed around 10 or 10:30 at night and wake up alert and energized around 4 or 4:30 in the morning, Dr. Fu said."

Sounds like I carry the gene. Although 6 hours seems a bit excessive. The 10pm crash time sounds about right, but socially midnight is better, and getting up at breakfast time is important.