結果 : how much sleep is a 15 year old supposed to get
2:55

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

TED
646,831 回視聴 - 4 年前
9:21

Science Explains How Much Sleep You Need Depending on Your Age

BRIGHT SIDE
5,498,852 回視聴 - 6 年前
0:41

How many hours of sleep a night do I need?

Columbia University Irving Medical Center
99,037 回視聴 - 11 年前
1:38

Sleep Time & Age

AllHealthGo
59,822 回視聴 - 5 年前
1:19

How many hours of sleep do you need?

Mount Sinai Health System
753,873 回視聴 - 7 年前
2:16

Ask Dr. Nandi: Do you really need less sleep as you age?

WXYZ-TV Detroit | Channel 7
3,597 回視聴 - 6 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
41,840 回視聴 - 2 年前
6:25

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

Better Than Yesterday
390,110 回視聴 - 5 年前
1:54

Best and Worst Times to Sleep

TechnionSociety
123,825 回視聴 - 13 年前
3:58

What Happens to Your Body on Little Sleep?

ABC News
1,120,973 回視聴 - 8 年前
6:18

How Many Hours of Sleep Do Children Need?

FirstCry Parenting
32,837 回視聴 - 2 年前
0:28

What Happens During Sleep Paralysis?

DanOndrey
8,801,628 回視聴 - 2 年前
1:58

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

Insider Tech
446,633 回視聴 - 7 年前
5:09

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

The Yoga Institute
236,908 回視聴 - 7 年前
0:29

How much does #sleep affect #testosterone levels?

Emin Rx
331 回視聴 - 11 か月前
0:22

if you sleep near your PC... #shorts

mryeester
6,213,666 回視聴 - 2 年前
0:43

How much will my newborn sleep? - Boys Town Pediatrics

BoysTownHospital
152,800 回視聴 - 9 年前
0:31

Three tips to help your child sleep better - Stanford Children's Health

Stanford Medicine Children's Health
48,035 回視聴 - 5 年前
6:20

Why Humans Are Supposed to Sleep in Two 4-Hour Phases

Half as Interesting
2,620,634 回視聴 - 3 年前
0:39

4 things every expecting parent must know about newborn sleep

BabyCenter
2,057,617 回視聴 - 1 年前