| It's OK 8 page essay For the study, the brains of 23 healthy young adults were scanned using functional magnetic resonance imaging (fMRI) before a full, normal night's sleep and again after a sleepless night. Upon the second test, researchers found impaired activity in the sleep-deprived brain's frontal lobe, the part of the brain that governs complex decision-making. Moreover, the sleep-deprived people showed increased brain activity in deep brain regions linked with rewards and favored more unhealthy snacks and junk food when they were deprived of sleep.
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