if making-up for sleep you didn't get during the week, when your body needs it, makes it more logical?

depriving yourself of sleep in the first place is highly illogical.

does not understand the human tendency to stay awake when it is not truly necessary either.

agrees with that entirely, even though she does it.

the college adage of "sleep, study, socialize: pick 2." is sadly pretty true most times.

though, possibly with "work" insteasd of "study" outside of school.

suggests that perhaps this is because Humans need more sleep than Vulcans

how much you guys typically need?

capable of going without sleep for over a week

does not need 8 hours of sleep a night