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Nathaniel Kleitman

American sleep researcher (1895-1999) · United States · On the map · Academics · Died at 104

Nathaniel Kleitman was an American physiologist and sleep researcher who served as Professor Emeritus in Physiology at the University of Chicago. He is recognized as the father of modern sleep research, and is the author of the seminal 1939 book Sleep and Wakefulness.

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A typical day, 30 days to 23 August 2026

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