Sleep was a subject that scientists had not woken up to. It is only in the past half-century or so that it has attracted the attention of dedicated researchers. It roams from the discovery of rapid-eye-movement (REM) sleep and circadian rhythms—the biological clocks that govern humanity’s days—to the effects of sleep deprivation (which can be fatal, at least in lab animals). It also probes the purpose, if any, of dreams. light on the limits of the body’s inbuilt circadian clock. It is caused by the airway repeatedly collapsing during sleep. Sufferers endure hundreds of episodes of oxygen deprivation every night (the characteristic gasping and snorting comes when a bodily reflex forces sleepers to take a desperate breath of air).
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Friday, June 27, 2025