Yep!
o4oo is supposed to be the time when people are their most asleep. Even awake people are 'supposed' to be kind of blearily out of it. We used to hit compounds & houses & villages & runways & shit whenever possible at o4oo for just that reason. Least resistance. Up at oh-dark-thirty to be kitted up and ready to rock at o4oo.
When I'm doing well I usually sleep from o2oo-o6oo or o3oo-10oo. LOL so I'm still up half the night. But when I'm doing badly? I'm always always always awake at o4oo. Unless I've been up for days and am finally crashing. Even if I. Sleeping around the clock I usually end up with a desperate need to pee, get a drink, make sure everything is clear at o4oo.
In the middle of the night I work, work out, call friends in different time zones (I'm closer with friends in the Balkans when I'm doing badly than friends in the same city!), read, watch movies, enjoy the peace & quiet :), find the music and dancing, think at the stars all wrapped up and warm in a blanket, go out to eat, go for a night swim, study, game on... List goes on.