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Sleep deprivation affects ability to study, learn and retain information in memory because of sleep deprivation. Lack of sleep negatively affects mood, motivation, judgment and even perception of events taking place around us. Sleep itself plays a role in memory consolidation – recording information in the brain – which is evidently essential for learning new studied content. The importance of sleeping well is to avoid over-indulging and over-exercising in order to get at least 7.5 to 8.5 hours of sleep.