When you take into consideration the amount of pressure you place on your shoulder and hips if you are a side sleeper, neck if you are a stomach sleeper, or lower back and sacrum if you are a back sleeper, you will realize that visco-elastic pressure-sensitive memory foam will offer you the best chance for “reducing the overall pressure placed on your joints” by contouring them without pushing back against them. With latex added to a memory foam mattress, it can offer a bit more spring against the concavities like the small of your back or sides, while not losing the ability to contour and displace pressure points.