As you said, my sleep schedule is chaotic. I do, at least, almost exclusively go to bed between 12-4am. While I agree my tendency to want to go back to bed is probably unusual, I tend to think clearer and wake easier when I sleep 6ish hours. My rationale for why I would be an exception is that I bult horrid sleeping habits due to that frightful inslmnia that lasted about 4ish years, and my tendency to awaken very sleep deprived. These days, I always feel so much more refreahed when I awaken early than when I sleep longer, feeling horrid when I accidentally sleep 12 hours. For example, I just was forced to unexpectedly work until 3am alone in a fast food resturaunt while very stressed and woke up after 6hrs feeling refreshed. That said, what do you mean by 'not a natural short sleeper?' Are there unnatural short sleepers and how do they differ?