Jump to Main ContentJump to Primary Navigation
Top

How much sleep do you really need? Terrifying video highlights the effects of sleep deprivation on brain function

untitled-4.jpg
untitled-5.jpg
untitled-3.jpg
untitled-2.jpg

A new video from YouTube channel AsapSCIENCE has gone viral after laying bare the grim facts behind sleep deprivation and the effects it can have on your body and mind.

We all know that lack of sleep impacts productivity but we tend not to think about it too much - that is, until a focus piece like this comes along.

The folks at AsapSCIENCE have combined simple graphics with a combination of bite-size facts from global studies on sleep to highlight how much shut-eye you really need and what happens to your body and brain if you don't get it.

The video has already clocked up 2.1million hits since being published earlier this week. Alarming headlines on the impact of sleep deprivation it draws attention to include:

Lack of sleep has the same cognitive impact as drunkenness

In one study from the University of Pennsylvania, researchers split a test group of people up into three categories; for 14 days, one group slept for eight hours a night, the second group slept for six hours a night, and the third group slept just four hours a night. Cognitive tests after the fortnight period showed those that had had six hours sleep a night showed a similar reaction time as people whose blood alcohol content was at 0.1 percent - in other words, the equivalent of being legally drunk.

The four hour sleep group showed even more dramatic symptoms of sleep loss, occasionally even falling asleep during their cognitive tests.

Sleep deprived people aren't aware of how sleep deprived they are

While short-term sleep deprivation can be addressed by a few good night's sleep, if the period of deprivation lasts over a period of months or years, it's unknown whether brain function can be fully repaired or whether it is permanently impacted. But with chronic sleep deprivation, researchers have found that how sleepy you feel does eventually level off, meaning that, alarmingly, you become less and less aware of your own impairment through sleep deprivation over time.

Less than seven hours a night leads to a 12% higher risk of death

Apart from cognitive issues, individuals who consistently sleep less than seven hours a night have an increased risk of heart disease, obesity and diabetes - not to mention a 12% higher risk of death. On the other hand, studies have shown that while sleeping more than eight hours a night does not impair brain function, it also carries an increased risk of heart disease, obesity and diabetes and a shocking 30% increased risk of mortality. So, needless to say, too much sleep can be unhealthy too.

However, the video also noted that genetics play a role in how much sleep your body needs per night, with some people able to thrive on six hours' sleep thanks to a mutation of a specific gene.

Find out more out the importance of sleep and how many hours you need per night by watching the video, below:

Related

hero.jpg

Miranda Kerr reveals her beauty routine secrets

Rosie-huntington-whiteley.jpg

The most iconic naked magazine covers

1.jpg

'Oh my gosh, I want him to stay little' young girl's tears on realising her beloved little brother will grow up

zucchini-pasta-salad-10-thumbhero.jpg

The best healthy recipe substitutes and swap-outs from cauliflower rice to celeriac mash

hero.jpg

The 10 secret beauty products celebrities swear by

hero4.jpg

Top 10 most amazing American foods with recipes

More

Meteorologist’s epic response to troll who called her “disgusting”

“Enough is enough.”

by Sarah Biddlecombe
18 Aug 2017

Acts of love, humanity and solidarity following the Barcelona attack

In the darkness, there is light.

by Moya Crockett
18 Aug 2017

How you can help those caught up in the Barcelona attack

The ways you can support the victims, survivors and investigation

by Kayleigh Dray
18 Aug 2017

People are furious about Trump’s response to the Barcelona attack

The world is sick of his double-standard on terrorism

by Kayleigh Dray
18 Aug 2017

Ryan Phillipe on how he tackles depression

“I’m thinking about how to focus and steady myself”

by Susan Devaney
17 Aug 2017

Are black girls being forced to grow up too fast?

A study has shown that black girls as young as five are seen as more adult than their white peers

by Kemi Alemoru
17 Aug 2017

Teen receives sickening messages after asking for career advice

This businessman's response was shocking

by Sarah Biddlecombe
17 Aug 2017

We want everything from this new high-street Disney collaboration

Seriously magical

by Megan Murray
17 Aug 2017

JK Rowling's video game confession has sparked a Twitter frenzy

The internet is LOVING it

by Megan Murray
17 Aug 2017

New law forces women in Texas to buy “rape insurance” for abortions

“I am proud to sign the legislation,” Governor Greg Abbott said

by Sarah Biddlecombe
17 Aug 2017