When shopping for memory foam adjustable beds, think first about your body’s shape, weight, and height. Your height is crucial, since your body weight becomes more dispersed on the mattress the taller you are. A box spring is unnecessary when you buy a good foam mattress. Instead, the mattress you buy is usually placed on a platform. You could be using a standard mattress with a box spring before. If you’re replacing the mattress, you will need to place plywood on top of the box spring. You get better support this way. For added comfort, you might want to find out the benefits of using a memory foam bed mattress topper. This is foam positioned on top of your mattress for better support.