Chronic sleep loss degrades nighttime performance

Although the exact function of sleep remains unknown, sleep is clearly necessary for optimal cognitive performance, learning, and memory. Sufficient sleep is also important for cardiovascular, metabolic, and immune functions. New findings by Harvard researchers at Brigham and Women’s Hospital (BWH) show how as little as one night's sleep loss - or sleep loss over several weeks - combine with the body’s natural 24-hour rhythms to determine how well people perform at a given moment. read more

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