http://www.cosmopolitan.com/sex-love/tips-moves/morning-sex | http://ca.askmen.com/dating/love_tip_60/62_love_tip.html | One of the many differences between the sexuality of men and women is that men tend to enjoy morning sex, while women mostly prefer to keep bedroom activity reserved for nighttime. This probably has a lot to do with what is referred to as nocturnal penile tumescence (NPT), which causes a man
