Sleep is the opportunity for our brains and bodies to recharge. It helps our waking concentration, planning, memory, and weight-regulation. Sleep deprivation has been linked to irritability, increased anxiety, poor memory, reduced reasoning and verbal skills, and physical dysfunction on almost every conceivable level from obesity to the risk of motor vehicle accidents to cardiovascular problems. There are also estimates that about 90% of clinically depressed patients note issues with sleep quality, including insomnia.

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