How many hours of sleep a night do I need?

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

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

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

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

How Much Sleep Do You Actually Need?

What Happens to Your Body on Little Sleep?

How Sleep Affects Your Brain

How To Survive A Day On No Sleep

Do people really need 8 hours of sleep?

Scientist Explains How Some People Need Only 4 Hours of Sleep | WIRED

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

Understand SLEEP DEBT | Can you Train yourself to sleep only 4 - 5 hours a day | Dr.Education

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

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

😴 5 Reasons Why You Can’t Sleep! #sleeping #sleep #insomnia #health

Is 6 Hours Enough Sleep? The Answer May Surprise You - NEUROSCIENTIST Matthew Walker

5 Hour Insomnia & Deep Sleep within 5 Minutes Hypnosis Session

Why Sleep Is So Important

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