Right exactly, that's why 8 hours was boasted as a general rule of thumb "full night's rest" for the longest time. Me personally I get 6 and I'm straight

Man I've been doing this for a while. I hear that 4.5 hours, 6 hours, or 7.5 hours are the best lengths of sleep to aim for. If I know I can't get the full 6, which is usually what I aim for, I can manage the 4.5hr cycle a few days out of the week and still truck along without much issue, especially if the day before wasn't very taxing.

Amazing shot! Utah has some of the wildest, most varying landscapes in the entire US.

If you really want moon-like, check out Goblin Valley in Utah. That place is truly remote and like you're on the lunar surface