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

You know you need to get enough sleep, but the question remains: How much is enough? Sleep scientist Matt Walker tells us the recommended amount for adults and explains why it's necessary for your long-term health.

[mangogo]

Me: watching this video instead of sleeping

[Jerome...]

Damn ... under 7h and over 9h are the only 2 kinds of sleep I get.

[Fassnight]

TED - "You need good quality sleep."
Also TED - "You better get the perfect amount of sleep or you will die"

[MechMiko]

Science: You need 7-8 hours of sleep-
Mind valley: THATS A LIE

[mahshshsrklingfa]

I alternate between 11 hours of sleep and 5 hours of sleep from night to night.

I am gonna die guys. Good bye

[ibbgkgs]

I started sleeping before 11pm everyday, it changed my life. I'm in a better mood always and I'm more productive, sleep is essential, no wonder it takes up to 8 hours of our day

[fkmyoutube]

Is it just me, or am I distracted by his hair.

[yigityigitoglu]

Gamers: *Chuckles* I'm in danger.

[Zecce]

You should read this guy's book: Why we sleep.
Good one.

[dailydoseofmedicinee]

Sleep helps control our metabolism and weight, promotes stable moods, helps prevent cardiovascular diseases, boosts our immune system/function, increases knowledge retention, and helps us with long and short-term memory. Sleep is also essential for brain functioning.

[inuka]

*Fun fact : If you don't sleep, you feel sleepy*

[fkmyoutube]

TED: The importance of sleep

Also TED: Releases 3 videos simultaneously

[Slam_]

'The shorter your sleep, the shorter your life.' Now that's a paradox if I've ever heard one.

[harukeyn]

What's your opinion about sleeping twice a day? For example I sleep 5.½-6 hours in the night and always take a 30-40 min nap at noon. Personally I feel like I have more energy for the entire day than when I sleep for 7-9 hours

[fikaimu]

The higher mortality rate in people who sleep too long is correlated, but not causal.
It's just that seriously ill people who are hospitalized are inevitably going to sleep longer.

[xlben]

Love this series! Keep up the good work

[makodefensegroup]

Lemme just tell the military i need 7-8 hours of sleep because a ted video told me to

[kimdavis]

I'm aware that children and teenagers need more sleep than adults - when does that increased requirement begin to drop off?
I ask because I'm 20 and still sleeping around 9 or 10 hours a night lol

[ssrini]

Please continue the Think Like A Coder series, I absolutely LOVED it

[erikaamot]

I sleep very soundly, go right to sleep and when I wake, get right up feeling fine .. 6 hours typical .. my whole adult life
67 years old with same BMI as at 20 .. 19.1 .. no aches and pains .. still flexible .. no known health issues