The myth of the eight-hour sleepRoger Ekirch says this 1595 engraving by Jan Saenredam is evidence of activity at night His book At Day's Close: Night in Times Past, published four years later, unearths more than 500 references to a segmented sleeping pattern - in diaries, court records, medical books and literature, from Homer's Odyssey to an anthropological account of modern tribes in Nigeria. Much like the experience of Wehr'
