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We need to sleep no less than 8 hours per night! 9/6/2015 •

How much sleep do we need? To answer this question let's consider the following experiment carried out by scientists from the Universities of Pennsylvania and Washington.The researchers invited 48 healthy grown-up people to participate in the experiment and divided them into four groups. Members of the first group had to spend two days in a row without sleep. Volunteers from the second group had only a four-hour sleep per night. The third group had a six-hour sleep every night. The fourth group slept for no less and no more than eight hours per night.


The experiment lasted for two weeks and almost every day the volunteers did special tests aimed at measuring their mental and physical performance.

The results of the experiment were as follows:

Those who slept 8 hours a day were sound as a bell and did all the tests perfectly well during the entire experiment, whereas the people from the other three groups found it difficult to stay mentally sharp and their physical performance was also decreasing. Amazingly enough, the difference between the people who slept 4 and 6 hours per night was hardly noticeable.

Among other things, the scientists came to a conclusion that fatigue may be accumulated in our body if we are regularly deprived of sleep. After a week of the experiment the volunteers who slept less than 8 hours could suddenly conk out during the daytime. After the second week the people who had six hours' sleep showed the same low performance as the people who didn't sleep two days in a row.

So, if you sleep only 6 hours a day during two weeks, it will have the same consequences as if you were awake 48 hours in a row.

Moreover, the volunteers didn't always notice decrease in their performance. When they were asked to estimate their mental and physical condition, the people appeared to overestimate themselves. In other words, we cannot estimate our performance adequately and it may lead to a delusion that lack of sleep is quite harmless. And this makes the situation only worse.

We live in the era of light offices, caffeine and the Internet. We truly believe that if we shorten our sleep we will have more time and thus will be more productive. Unfortunately, this is not true. The less we sleep, the lower our performance is. More than that, our health condition gets worse and our body grows old much faster.

How to sleep properly? Here are some practical recommendations from scientists:

-Sleep no less than 7.5 – 8 hours a day.

-Try not to consume products high in caffeine (it's much better to eat an apple in the morning than to have a cup of coffee).

-Give up smoking (it causes sleep troubles).

-Remove everything from the bedroom that can prevent you from sleeping – a PC, a TV-set, a smartphone etc.

-Use dense curtains or blinds that do not allow any light into the room (the sufficient amounts of melatonin are produced only in the darkness).

-Get up and go to bed at the same time every day (even at the weekends).

-Don't use a smartphone or tablet before going to bed (the blue light they radiate may block melatonin production and you will need more time to fall asleep).

#Society

Your opinion matters
13 Comments
Sarah Hearn-vonFoerster
Sarah Hearn-vonFoerster
Really enjoyed these trivia quizzes.
3
Sep 6, 2015 9:05PM
Kennedy musekwa
Very interesting
0
Sep 6, 2015 10:02PM
Perry Hartline
Perry Hartline
Love the quizzes, but often they're esoteric and have obscure answers. Still fun though. Like this one, not a quizz, but good facts.
0
Sep 7, 2015 12:07AM
Ian Bitcoin
Ian Bitcoin
I was going to comment but I'm too sleepy!
0
Sep 7, 2015 1:40AM
Barbara Mitchell
Barbara Mitchell
If I get that much sleep I get a headache an feel sluggish for the day depends on how active during the day I am how much sleep that night on average about 6 hours a night sometimes 7 but not often however I do take vitamins an sometimes a power nap of about 15minutes to half hour depends on how hard I worked for the day I am 68
2
Sep 7, 2015 4:34AM
Helen Spencer Schlie
Helen Spencer Schlie
I'll answer in the morning...after 8 hours and an Apple...My wise Grandma said " An apple a day keeps the Doctor away.....unless he's young and good-looking "
3
Sep 7, 2015 7:14AM
Joan Harland Braunstein
Joan Harland Braunstein
Barbara -- I am the same age, have the same response to more than six hours of sleep, and follow the same power nap regimen. I think more research needs to be done on folks like us.
2
Sep 7, 2015 11:55AM
rmcnally
very interesting. Thanks !!!
0
Sep 7, 2015 11:10PM
anthonygriffin
I can't speak for the other branches of service. But while serving in the "Navy's Submarine Fleet." The "Captain's Standing Order" was for at least (3) hours sleep before standing a watch.
0
Sep 8, 2015 9:30AM
Dianna Allard
Dianna Allard
I am awaiting a test for sleep apnea, as my sleep patterns seem all over the place. I'm hoping the Dr can find a reason, and a cure for my daily exhaustion. This article was very interesting.
0
Sep 8, 2015 6:59PM

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