I can relate. I have no problem working till 2 or 3am (regardless of travel - I adjust very quickly), but if I have to get up before 8am, I feel miserable all

I can relate. I have no problem working till 2 or 3am (regardless of travel - I adjust very quickly), but if I have to get up before 8am, I feel miserable all day. I can still function, but then I have zero creativity and people annoy me. It's like the bottom part of bipolar. Let me sleep late, and I kick ass.