I’m not sure if this answers your question, but one thing I’ve found is that I can’t take naps…at all. No matter how tired or sleepy I may be, if it’s not “bed time” (whenever that ends up being, depending on the day), I just can’t sleep. And I can’t fall asleep in random places either: if it’s not a “designated sleeping ‘surface’” (and I say surface because it doesn’t necessarily have to be a bed, as long as I know that that’s where I’m supposed to sleep), sleep just doesn’t happen for me. Oh, and also, if I’m still wearing day clothes, I won’t fall asleep either. I don’t fall asleep during long car rides or long flights (meaning 8+ hours). It’s not out of fear or anything because I love flying, so I don’t really know what it is not that I’m complaining. My friends think it’s strange and funny but I don’t see anything out of the ordinary with it…I guess when it comes to naps, I’ll never fit in with those who surround me because everyone I know loves napping lol