No two people have identical sleeping needs. This is why so many couples disagree on their choice of mattress. Those sleeping on regular mattresses do not sleep as well as those on memory foam mattresses, and what's more, regular mattresses are not customizable to meet the needs of two different people. Depending on how you sleep, you can use a customizable mattress to configure the order of layers on your memory foam mattress, helping you to sleep the best. What's more, some beds are split down the middle, enabling you to make each side have a different feel. This is ideal for partners sharing a bed.