A transcript of a fascinating debate between two eminent sleep scientists, Robert Stickgold and Daniel Kripke, on the question of whether we need more sleep. Stickgold spells out the damaging consequences of "getting less than the eight hours of sleep your body is asking for," whilst Kripke, who focuses on the correlations between oversleep and poor health, wonders why eight hours has been established as the "norm" for healthy sleep. Why not seven, or nine? And should the figure be the same for everyone? He also suspects that the sleeping-pill industry has played a significant role in promoting the perception that we need (to buy) more sleep.
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