My wife falls asleep before I do almost every night. By 8 or 9 PM she is out cold. By the time I crawl into be she has has 3, 4 or even 5 hours of sleep. Sometimes she wakes up and is amenable to sex. Other times we kiss and she rolls over and goes back to sleep. When we do have sex it is usually good for about an hour or more, since she is well rested. I love it! Now that she is a bit older, her sex drive is through the roof! The problem is the next moring when I have to get up at 6:00 and have had maybe 3 hours sleep. But is it worth it.