How much sex is enough?

"For me? Oh, God. My idea of the perfect life would be if we just stayed in bed all time. We could make love more or less continuously, only get up to bring in supplies, you know, fresh water and fruit to prevent scurvy, and make occasional trips to the bathroom to shave before diving back into bed. And once in a while we could change the sheets. And go to the movies to prevent bedsores."

-a quote from a novel; has niffenegger been reading my mind?-