Some researchers claim that foreplay is pretty much useless and your girl just wants the intercourse part! The funny thing is studies on nutrition, sex, and exercise always vary so much. One source might say "eat carbs only or get fat" another will say "eat carbs and you WILL get fat". One might say "don't do heavy weights" another might say "lift heavy weights". Shrug.
Seems like a weird combination, right? But God has nothing against lots and lots of sex... provided it's within a marriage and with your husband, right? And thus Christian Nymphos are born. A website dedicated to sex talk for horny married Christian women!
Eh, I'm sure you've already heard many places tell you how much sleep you should get, but this article also has some tips about how to sleep better. Yes, I know you've probably read these before too.