When it comes to your choice of mattress what factor is most important, good for sleep, or good for having great sex?You might be surprised that many Americans are choosing sleep over sexMemory foam mattresses are becoming more and more popular on the market. The past eight years has seen growth from 14% to almost 20%, even though most people say "it's great for sleep but not for sex."

40% of memory foam owners say sex isn't great on them, but 80% say they're happy with memory foam.