Before you go mattress shopping, you need to do your research to discover what options are available to you. If you want to expand the possibilities beyond the standard spring mattress, then there are plenty of mattress review websites that will show you other kinds you might buy. For example, an alternating pressure mattress is a sophisticated form of air mattress with electric controls. And there are many foam options as well, including visco-elastic polyurethane.

Spring mattresses, of course, have pretty much been the standard in North America for decades. Yet as you'll see in a mattress review for any bed using memory foam, this mattress will first be compared to a boxed spring before being judged on its own merits, as will mattresses that use air flow. Many people who buy foam, in fact, try to have the best of both worlds by purchasing a memory foam mattress pad or topper to place on top of their spring mattress. They hope to take advantage of the bounce and the give that springs supply, along with the extra support and comfort offered by the memory foam.

Springs can lose their shape eventually, but foam mattresses may also do so. Various types of reviews on mattresses will point out the difference between ordinary foam and memory foam. The latter is much denser, with millions of tiny cells that soften with body heat but "remember" their original shape as they cool. So a mattress made of ordinary foam will flatten much sooner than one made from memory foam.

Another comparison you might find would be between memory foam and the alternating pressure mattress. This mattress has small air cells inside that are inflated and deflated with electric controls. Studies have shown that both the visco memory foam mattress and this air mattress give better support than other types. Yet it was the alternating air pressure mattress that did the best job of preventing bedsores, because the force pressing on a person's body differed from time to time.

With so many different types of mattress out there, and so many options within each category, mattress review sites will provide invaluable information for you, and can provide a lot of tips. You might decide that a good spring mattress is exactly what you want, or perhaps you'll look into an air mattress. Whether you choose one of those, or go for a 2, 3 or 4 inch memory foam mattress, these reviews will definitely give you plenty of information.

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