To be honest my generalization has less to do with schedules/who your partner is and more to do with the supply of partners. I think that (in the US at least) in college sex is less dependent on one partner compared to later in life.
I read your profile and appreciate the sentiment re: votes. I am not trying to be crude. Within this context this is my best effort at a thoughtful response.
Y'know, maybe I'm off base, but my perception is that for people not in a committed relationship, college sex was basically like this:
1. Go to party
2. Get wasted
3. ????
4. Wake up hungover: "What, I'm really in bed with this person? WTF, how did that happen?"
Anyone disciplined enough to maintain an unconventional sleep schedule, probably isn't doing that to begin with. And doesn't it fall under the general "lack of social interaction" complaint?
But I don't know if this is a particularly productive line of discussion. I'm only here because there were no posts about Haskell on the front page. :)