結果 : is 7 hours sleep good for a 15 year old
0:41

How many hours of sleep a night do I need?

Columbia University Irving Medical Center
96,895 回視聴 - 11 年前
2:55

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

TED
643,745 回視聴 - 4 年前
1:19

How many hours of sleep do you need?

Mount Sinai Health System
752,208 回視聴 - 7 年前
9:21

Science Explains How Much Sleep You Need Depending on Your Age

BRIGHT SIDE
5,497,307 回視聴 - 6 年前
1:38

Sleep Time & Age

AllHealthGo
59,311 回視聴 - 5 年前
3:33

How Much Sleep Do You Need? - Professor Of Neuroscience, Russel Foster

Deep Dive with Ali Abdaal
53,417 回視聴 - 1 年前
1:01

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

WCNC
136,599 回視聴 - 4 年前
5:09

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

The Yoga Institute
235,747 回視聴 - 7 年前
5:01

Is Six Hours of Sleep Enough?

NutritionFacts.org
120,471 回視聴 - 1 年前
3:58

What Happens to Your Body on Little Sleep?

ABC News
1,118,573 回視聴 - 8 年前
6:25

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

Better Than Yesterday
389,099 回視聴 - 5 年前
1:51

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

This Morning
51,677 回視聴 - 6 年前
1:54

Best and Worst Times to Sleep

TechnionSociety
123,235 回視聴 - 13 年前
1:58

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

Insider Tech
445,925 回視聴 - 7 年前
7:54

Why Getting the 8th Hour of Sleep Matters

Hypertroph
120,887 回視聴 - 3 年前
6:18

How Many Hours of Sleep Do Children Need?

FirstCry Parenting
32,712 回視聴 - 2 年前
0:35

Elon Musk Shares How Many Hours of Sleep He Needs to Be Productive! | @MindMasteryX

Inspire Greatness
1,638,290 回視聴 - 2 年前
5:51

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

CBS Mornings
262,254 回視聴 - 6 年前
6:12

How much Sleep do you Actually Need?

Apna College
401,860 回視聴 - 2 年前
1:52

How do you get your baby on a sleep schedule?

Mount Sinai Health System
241,972 回視聴 - 7 年前