It's not that surprising though, of course we sleep, talk, watch TV, surf, computer games much moire than having sex.
my bedtime activity: chess vs my psp. nothing like a good brain training before the end of a long day. call it lame if you will, but it makes me think more >=)
reading?hell no fantasizng in bed more than reading definite how can one read in bed if mate around unless you re single