How many hours of sleep a night do I need?

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

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

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

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

How To Survive A Day On No Sleep

Tips to recover after a terrible night's sleep

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

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

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

What Happens to Your Body on Little Sleep?

How many hours of sleep do you need?

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

Can You Catch Up on Lost Sleep?

How to Sleep Less & Sleep Better

Do people really need 8 hours of sleep?

What to do when you CAN'T sleep

10 Sleep Myths Finally Debunked

What Happens To Your Body When You Sleep 4-6 Hours vs 7-10 Hours

Ep. 47: Sleeping Less Than 6 Hours? You're Probably Sleep Deprived | The Scope