結果 : how many hours did i sleep last night
0:41

How many hours of sleep a night do I need?

Columbia University Irving Medical Center
99,273 回視聴 - 11 年前
2:55

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

TED
647,164 回視聴 - 4 年前
1:19

How many hours of sleep do you need?

Mount Sinai Health System
754,073 回視聴 - 7 年前
1:58

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

Insider Tech
446,715 回視聴 - 7 年前
3:54

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

TED
2,909,140 回視聴 - 1 年前
1:51

I Can't Sleep for More Than 4 Hours a Night - Why? | This Morning

This Morning
52,142 回視聴 - 6 年前
6:52

Nirvana - Where Did You Sleep Last Night (Live On MTV Unplugged Unedited)

Nirvana
84,465,524 回視聴 - 4 年前
1:01

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

WCNC
139,129 回視聴 - 4 年前
0:23

Why Do Cats Sleep So Much? 💤🐱 #shorts

Cat Fact
11 回視聴 - 2 日前
3:24

How Much Sleep Do You Actually Need?

AsapSCIENCE
11,482,842 回視聴 - 10 年前
1:28

Pulling an All-Nighter vs. 2 Hours of Sleep: Which is Worse? – Healthy Living and Diet Tips–SELF

SELF
221,423 回視聴 - 10 年前
5:09

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

The Yoga Institute
237,023 回視聴 - 7 年前
1:17

How Many Hours Do You Sleep? - Fan Questions | StarTalk

National Geographic
59,019 回視聴 - 8 年前
2:45

What happens when we sleep?

The Economist
10,272,033 回視聴 - 5 年前
6:38

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

TED
2,050,664 回視聴 - 6 年前
3:58

What Happens to Your Body on Little Sleep?

ABC News
1,121,207 回視聴 - 8 年前
3:01

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

Thomas DeLauer
244,881 回視聴 - 8 年前
6:25

Can You Sleep Too Much? (The Answer Might Surprise You)

Better Than Yesterday
390,215 回視聴 - 5 年前
22:56

What Happens If You ONLY SLEEP 4 Hours A Night for 30 Days?

Dr. Sten Ekberg
203,848 回視聴 - 1 年前
9:38

Insomnia: why can't I sleep?

The Guardian
564,064 回視聴 - 5 年前