Before the introduction of factory shift work, Americans enjoyed a range of sleeping practices, most commonly two nightly periods of rest supplemented by daytime naps. The new sleeping regimen—eight uninterrupted hours of sleep at night—led to the pathologization of other ways of sleeping. Arguing that the current model of sleep is rooted not in biology but in industrial capitalism’s relentless need for productivity, The Slumbering Masses examines so-called Z-drugs that promote sleep, the use of both legal and illicit stimulants to combat sleepiness, and the contemporary politics of timePenn and Teller covered this pretty well in their Sleep, Inc. episode of Bullshit!, too.
pracowity: I suspect a mattress that automatically adjusts to spread your weight evenly would be the most comfortable. It would need a lot of things under the surface that sense pressure at one point, send the pressure reading for that point to a computer, and quietly raise or lower the surface at that point on command from the computer (and hold that position until instructed to change). It could even be like a bed of nails as long as the nails all adjusted to spread your weight evenly.You're describing fluid pressure: waterbeds.
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posted by raihan_ at 2:17 PM on June 23, 2012 [3 favorites]