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For more than a year, I slept on a Swedish-made Tempur-Pedic mattress. I’m absolutely positive that you’ve encountered their relentless marketing campaign: The only mattress recognized by NASA and certified by the Space Foundation, Tempur-Pedic features heat sensitive memory foam designed to conform to the contours of the human body, relieve pressure points, and promote deep, uninterrupted sleep. How could anyone resist?
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Actually, it’s like sleeping in a giant bowl of reheated oatmeal. The memory foam envelops your body, and you become entangled in a mess of wrinkled, sweaty sheets. With every move that you make, you sink deeper and deeper into the void. The Tempur-pedic is, in words of John Milton, “a dark illimitable ocean, without bound, without dimension: where time and place are lost.”
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And, no, it's not good for you back.