Memory foam mattresses are actually successful because they 'forget' the shape of bodies, one bed expert has said.Zahid Sardar, a specialist for the San Francisco Chronicle, said many people get the 'memory' part of the mattresses mixed up.Michael Nermon, founder of Ergo Customized Comfort in Orange County, California, reminded bed buyers memory foam actually 'remembers' it's original shape.He told the paper: "Memory foam layers just return to their original shape after each use, so there are no lumps and bumps. They yield again with body heat to your shape."Moving memory foam mattresses is much easier, the paper added, because their lack of springs and other components makes them easy to pack.Experts at Boise State University and Northwestern University have recently found a method of producing less expensive foam which could lead to more of the special mattresses.
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