how many hours should a 15 year old boy sleep（関連順）

0:41

How many hours of sleep a night do I need?

Columbia University Irving Medical Center

96,955 回視聴 - 11 年前

1:19

How many hours of sleep do you need?

Mount Sinai Health System

752,243 回視聴 - 7 年前

2:55

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

TED

643,821 回視聴 - 4 年前

9:21

Science Explains How Much Sleep You Need Depending on Your Age

BRIGHT SIDE

5,497,333 回視聴 - 6 年前

6:18

How Many Hours of Sleep Do Children Need?

Sleep Time & Age

Why is my teenager always tired? How much sleep should they get?

IntermountainParents

4,578 回視聴 - 11 年前

5:09

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

The Yoga Institute

235,785 回視聴 - 7 年前

4:56

Science Explains How Much Sleep You Need Depending on Your Age

Better Life

7,521 回視聴 - 3 年前

1:31

How Long Should My Toddler Nap?

BabySleepMadeSimple

4,152 回視聴 - 5 年前

1:17

How long should my toddler sleep at night and at nap time?

IntermountainParents

5,233 回視聴 - 10 年前

2:28

Sleep Strategies: For the 9 to 18 Month Old Child | NorthBay Health

NorthBay Health

199,598 回視聴 - 10 年前

3:58

What Happens to Your Body on Little Sleep?

ABC News

1,118,643 回視聴 - 8 年前

0:35

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

Inspire Greatness

1,639,383 回視聴 - 2 年前

7:54

Why Getting the 8th Hour of Sleep Matters

Hypertroph

120,907 回視聴 - 3 年前

0:43

How much will my newborn sleep? - Boys Town Pediatrics

BoysTownHospital

152,328 回視聴 - 9 年前

1:54

Best and Worst Times to Sleep

TechnionSociety

123,258 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

445,948 回視聴 - 7 年前

1:39

How old is too old for your child to sleep in bed with you? Expert advice for parents

WKYC Channel 3

41,266 回視聴 - 2 年前

1:01

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

WCNC

136,666 回視聴 - 4 年前

結果 : how many hours should a 15 year old boy sleep