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Water beds and motionThe first water beds in the 1970's were little more than large water balloons shaped roughly like a mattress. Sleeping on waterbed mattresses could be very comfortable, but any motion could send waves undulating through the water bed mattress. Some people found this motion soothing. Others got seasick. The need for a waveless water bed mattress has prompted much of the technical improvements in waterbed technology since that time.
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