- Scientists say they have nailed down the ideal amount of sleep in middle and old age The Philadelphia Tribune
- Forget 8 Hours – Scientists Discover Ideal Amount of Sleep in Middle and Old Age SciTechDaily
- Think 8 hours of sleep is best? Think again! DW (English)
- The debate about how much sleep you really need may be over Duluth News Tribune
- Experts reveal EXACTLY how much sleep you need to live a better life in your later years... The Irish Sun
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