Getting less than six hours sleep a night increases risk of early

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Here's What Sleep Deprivation Does to Your Body — Best Life

Lack of Sleep May Lead to Early Death, Study Finds

The Health Toll of Poor Sleep - The New York Times

Is 5 Hours of Sleep Enough? It's Highly Unlikely

Exercise May Help Counteract the Toll of Poor Sleep, Study Suggests - The New York Times

Getting less than six hours' sleep a night? Here's what it does to your body

What Happens When You Don't Get Enough Sleep? 13 Effects

When sleeping for less than 7 hours continues, the risk of developing various diseases increases from mental disease to sexual dysfunction - GIGAZINE

Less than 6 or more than 10 hours of sleep raises the risk of health problems

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Here's a Surprising Look at What Sleep Deprivation Does to Your Body - Mic

Less Than 6 Hours of Sleep Could be Deadly for Some