Why do we need 8 hours sleep at night, or to spend a third of our life in bed? It is now thought extended sleep deprivation, sleeping regularly only 4 or five hours a night can have harmful health effects. Long-term sleep deprivation is now liked to heart disease, heart failure, irregular heartbeat, high blood pressure, diabetes and even dementia and weight loss. Because of comfort eating it can also cause weight gain.
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Sleep Deprivation-Why Do We Need Eight Hours Sleep?
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