結果 : why do i feel more awake with less sleep
1:58

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

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1:01

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

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11:05

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

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3:01

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

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2:41

How To Survive A Day On No Sleep

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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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1:58

Why Do I Feel So Sleepy Despite Having Enough Sleep? – Dr. Berg

Dr. Eric Berg DC
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5:40

Sleepy during the day but not at night! A sleep expert answers your questions

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8:50

Require LESS Sleep & Feel MORE Awake by Doing This

Thomas DeLauer
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2:55

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

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7:05

Do Depressed People Need More Sleep? How To Do Wake Therapy

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5:06

Ask Dr Mike: How to Function on Little Sleep

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0:41

How many hours of sleep a night do I need?

Columbia University Irving Medical Center
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0:27

Do people really need 8 hours of sleep?

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1:22:05

Master Your Sleep & Be More Alert When Awake

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4:35

What would happen if you didn’t sleep? - Claudia Aguirre

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5:51

How lack of sleep affects health and tips for a good night's rest

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3:58

What Happens to Your Body on Little Sleep?

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5:29

6 tips for better sleep | Sleeping with Science, a TED series

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4:56

Tips to recover after a terrible night's sleep

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