結果 : is 7 hours the best amount of sleep
2:55

How much sleep do you really need? | Sleeping with Science, a TED series

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How many hours of sleep a night do I need?

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Do You Really Need 8 Hours of Sleep Every Night? | Body Stuff with Dr. Jen Gunter | TED

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Should you get 8 hours of sleep? | Andrew Huberman and Lex Fridman

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How Much Sleep Should I Be Getting? | Is 6-8 Hours of Sleep Enough?

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How Much Sleep Do You Actually Need?

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What Happens To Your Body When You Sleep 4-6 Hours vs 7-10 Hours

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Relaxing Rainfall for Sleep, Study & Focus | 7 Hours of Gentle Rain for a Calm Atmosphere

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6:38

The brain benefits of deep sleep -- and how to get more of it | Dan Gartenberg

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Why Getting the 8th Hour of Sleep Matters

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How to Sleep Less and Get More Out of Your Day- Thomas DeLauer

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Yoga Guru - Hansaji | How many hours should you sleep?

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Sleep Is The Best Muscle Building "Drug"?

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Why you're still tired after getting 8 hours of sleep

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Why You're Always Tired - 7 Myths Ruining Your Sleep

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Doctor Explains Why You DON’T Need 8 Hours Sleep!

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Best and Worst Times to Sleep

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Why 4 Hours Of Sleep Is Terrible For You — Even If You Don't Feel Tired

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Science Explains How Much Sleep You Need Depending on Your Age

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