Memory Foam Myths:

The Myths Of Memory Foam!
The Truth Exposed!

To continue with the current theme of memory foam mattresses I thought it prudent to discuss the biggest myths of memory foam mattresses. A lot of the stuff you read about memory foam is used soley for marketing purposes and to make claims against the quality of competing memory foam bed manufacturers. Almost all memory foam is considered to be visco elastic. Visco elastic is essentially just saying that the memory foam is harder cool, and more elastic as it heats up. There are really only two types of memory foam. The first type of memory foam responds to heat hotter then the heat your body can produce, and the second heats up directly with the tempurature of your body. Therefore companies that market memory foam beds that are "heat sensitive," yet make their beds with memory foam that doesn't react to body heat, need to drop their "heat sensitive" claim. However it should be understood that both kinds of memory foam will mold to the shape of the body, due to their open cell sturcture. The difference is that memory foam beds that do react to body heat will soften and mold more precisely to the body. The more the memory foam can mirror the shape of the body, the more support the bed is able to provide. It is the rule of thumb that memory foam beds that are "heat sensitive" typically cost more because of the extra componants that go into making them. 

Be wary of low density memory foam mattresses. Although these beds may feel the same as more expensive models to begin with, over time the lower quality memory foam will break down resulting in a sagging middle. Sagging memory foam beds can result in a not properly aligned spine, which over time can be damaging to health.