@JuliaHB1 @lbc973 A curious article about sleeping: Do You Really Need an 8 Hour Sleep? http://unbornleaders.com/sites/default/files/Unborn_Leaders_Do_You_Need_8_Hours_Sleep.pdf … via @gregnazvanov
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@JuliaHB1@lbc973@gregnazvanov This article made a short historical analysis about how much hours people used to sleep in the past.
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