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The Baltimore Sun

4. Sleep

Lack of sleep contributes to a loss of ability to concentrate, form memories and solve problems, and it is a factor in depression, heart disease, hypertension and irritability. Your body also becomes less sensitive to its own insulin, increasing your risk for diabetes and high blood pressure. To be your sharpest and brightest, get a full 7 to 8 hours of uninterrupted sleep every night. HANDOUT
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