8 hours they say but how many people in academics get those ours to sleep?

8 hours of sleep is thought sufficient for adults, while about 10 hours of sleep for children.

Thank you so much for your helpful answer Dear Dr Sahar Qazi .

But I want to know if we can reduce it to 5 hours?

Of course gradually

Your question goes into chronobiology, which is very dependent on the season and the climate. My findings are attached (pdf). 5 hours will not end up in a healthy condition of your body, a min. of seven can be achieved.

Thank you so much for your helpful answer Dear Dr Stephen I. Ternyik .

8 hours they say but how many people in academics get those ours to sleep?

For me 6 hours is not bad for an active person like myself

Sleep is the basic necessity of life & where is from children to aged person . It has been observed that student preparing for the examination they get the sleep of about 7 hrs . Spiritual master who are in their worshiping period& also in their mediation they use to prefer a sleep between 5 & 6 hrs .Besides person of standing they don't keep the time of their sleep during the endorsement of their working & in such cases it is likely that in advance age they may create a health problems

With this sometimes back I have my publication under the captioned '' Sleep '' for your kind perusal with a request to offer your valuable opinion

This is my personal opinion

8 hours?

7-8 hours.

Thank you so much for your helpful answers Dear Dr Segun Michael Abegunde , Felix Nwafor ,Rohit Manilal Parikh ,Qais Khaleel ,Dmytro Leshchenko and Paul Olusegun Bankole .

I think 6 to 8 hours of sleep is enough for adults.

Please also have a look at this RG link.

https://www.researchgate.net/post/Healthily_How_many_hours_do_you_think_enough_to_our_needed_to_sleeping

1: Teenagers (14-17): Sleep range widened by one hour to 8-10 hours (previously it was 8.5-9.5)

2: Younger adults (18-25): Sleep range is 7-9 hours (new age category)

3: Adults (26-64): Sleep range did not change and remains 7-9 hours.

4: Older adults (65+): Sleep range is 7-8 hours (new age category)

Regards

Thank you so much for your helpful answers Dear Dr Arvind Singh and Ahsan Siddiqui .

6-8 hours

Thank you so much for your helpful answer Dear Dr Nihada Ahmetovic .

• Newborns need 16-18 hours a day,
• Two-year-olds typically need on average 11-13 hours. 
• By the age of five, children will sleep between 10-12 hours. 
• Teenagers definitely don’t sleep enough and should be getting eight to 10 hours.
• From the age of 20 onwards it is normal to sleep seven to nine hours.
• Older than 65, the amount of sleep decreases, to around five to seven hours.

https://www.independent.co.uk/life-style/how-much-sleep-should-i-get-according-to-age-a7633916.html

Any adult who is working will require minimum 6 hours of good sleep for having better work day as I experience..the lack of good amount of sleep will make your day less fruitful

Thank you so much for your helpful answers Dear Dr Asit Kumar Batabyal and Asoori Latha .

8 hours

The body will tell you that. If not enough, one feels tired all day. The only way to get up early is when you are worried about something. I think at least 6 hours is needed, but an average of 7.5 is good.

There are no specific hours of sleep, but as much effort as a person, a person maybe sleep more than 8 h after hard work.

8 hours could be enough. But people vary in the duration allocated for the sleeping time.

The human being is very much like an animal with (1) seasonal

variation, (2) responding to light and dark variation, (3) gives each individual a pattern that varies over their lifespan.

It depends of season as well as type of work ( S. Ternyik and D. Mazur are rigth). After hard work (M. Musleh too) person needs of more sleep than office slogger... People, who work by brain need at least of 8 hours.

Russian former president Eltsin slept only 5 hours (not due to his business, he lived such way whole life). What should I think about his affairs and mental level?

In fact, genes determine the period of sleep as you determine your weight, and measure your shoes. Some people do not need to sleep long, but others do not sleep for less than 11 to 12 hours to feel they are at their best.

Many people who complain of sleep disturbance have no real sleep problems. But they have an expectation that they need to sleep for a certain number of hours.

Thank you so much for your helpful answers Dear Dr Emad Kamil Hussein ,Michael Issigonis ,Mohammed H. Musleh ,Hazim Al Dilaimy ,Srdjan Atanasijevic ,Dennis Mazur ,Vadim S. Gorshkov and Isam Issa Omran .

If you are able to sleep effectively, then it is about 1-2 hours. Otherwise, you can damage your health if you don't have enough time to sleep. You can consider the time you spent "dreaming" as a lost, wasted time.

I'd suggest the book "The War Against Sleep": https://www.amazon.com/War-Against-Sleep-Philosophy-Gurdjieff/dp/085030198X

It is the quality of sleep whats matter. For adults 8 hours good quality of sleep are enough.

For me, 5 hour sleep is enough.

Hayder

The body need 8 hours to sleep every day in general that enough to give the body time for rest and refreshing

Please also see these useful links.

https://www.quora.com/How-many-hours-of-sleep-is-enough

https://www.quora.com/How-many-hours-of-sleep-is-good-for-a-24-25-year-old

https://www.quora.com/How-many-hours-do-we-need-for-sleep-at-the-age-24

https://www.quora.com/For-how-many-hours-should-a-student-sleep-in-a-day

It depends on the effort and age of the person

i think 6 hours

It is advisable to sleep 7.5 hours a day.

Thank you so much for your helpful answers Dear Dr Aleksandar Jevremovic ,Mousa Bani Baker , Hayder Al-Saedi , Arvind Singh , Reham Almosawi , Qasim Mohammed Hussein ,Luaay Abdulwahid Shihab and Ildefonso Gustavo Díaz Sandoval .

About 7-8hours

I believe that a person must sleep 8 hours, siesta including, fulfill the needs of the body and the spirit for another 8 hours and work 8 hours. Always to sleep in a comfortable and adequate places. Not a part in bed and a part in the office or in the car while driving or even standing somewhere, like horses. The quality of sleep is important and also that of dreams. A 15-30 minute nap immediately after lunch and what it takes to restore the mind and body and restart working more effectively.

Continuous sleep 6 hours

Discontinued sleep 8 hours.

6 hour

before retirement I TOOK 8 HR SLEEP AND FELT NO PROBLEM

About 7 hours sound sleep is good for adults.

I need 9 hours to work effectively.

Thank you so much for your helpful answers Dear Dr Ahmadi Murjani

Hidouri Khaoula

Baby = 20 hour

Adult = 8h

Old man = 6 hours

Thank you so much for your helpful answer Dear Dr Abderrahmane Khechekhouche .

Dear Researcher

It depends on age but for a adult person about 6-8 hrs complete and comfortable sleeping sleeping is required for sufficient relax.

thank you

Thank you so much for your helpful answer Dear Dr N. C. Ujjania and Ahmed Y. Yassin .

always 8 hours is enough, but some times less 8 hours may be enough.

How many hours of sleep in 24 hours is enough?

We know there can be subjective answers depending on factors like workload in hands, surrounding environments, age, health status, jet lag etc. Generally 8 hours of sleep can be ideal but some of us practically have less than that. Also finding even though we sleep 5 hours every day but when we do this continuously which becomes a habit, our life will get use to it (but not sure is there any side effect). Moreover, if we get use to sleep 5 hours everyday, and one day we sleep 10-12 hours, also finding our body / mind not getting use to these long hours of sleep.

Thank you so much for your helpful answers Dear Dr Alia Karim and Han Ping Fung .

8 hours is enough for the human body in the night. I think that appears to be the best amount of sleep

Thank you so much for your helpful answer Dear Dr Mohammed Al-Dujaili.

6 hours

6 - 7 hours

Thank you so much for your helpful answers Dear Dr Ashok Yadav and Luaay Abdulwahid Shihab .

8 hours is enough, i think.

I think 8 hours is too sufficient to sleep. Some scientists also say that early sleep, especially before 12 midnight, is very useful and gives more energy to the body. If sleep before midnight, it may already be 5 or 6 hours. I tried it myself.

DR . Mohamadreza Rezaei Ahvanooei

you welcome

Thank you so much for your helpful answers Dear Dr Amir Hossein Salimi and Ammar S.Ismael .

I think 8 hours

I think 6 to 8 hour sleep is sufficient to sleep.

6-7 hours

Thank you so much for your helpful answers Dear Dr Samy Selim , Mohammad Reza Hassanvand and Hamid Reza Samadifard .

5 hours for me

Thank you so much for your helpful answer Dear Dr Aung Ze Ya .

6-8 hours

Thank you so much for your helpful answer Dear Dr Maham Muzamil .

For me, exactly 8hrs.

8 hrs

6 hours

6-8hrs

6-8 but it is really not possible

Usually 8 hours

Agree@Enamul

Follow

8 hs

Usually 8 hours, but for me less than 8 hrs

regular time is 8 hours, but to me 7 hour is enough

For me 8 hours .

Following

Recommendation from National Sleep Foundation

"the appropriate sleep duration for newborns is between 14 and 17 hours, infants between 12 and 15 hours, toddlers between 11 and 14 hours, preschoolers between 10 and 13 hours, and school-aged children between 9 and 11 hours. For teenagers, 8 to 10 hours was considered appropriate, 7 to 9 hours for young adults and adults, and 7 to 8 hours of sleep for older adults."

Reference: Hirshkowitz, M., Whiton, K., Albert, S. M., Alessi, C., Bruni, O., DonCarlos, L., ... & Neubauer, D. N. (2015). National Sleep Foundation’s sleep time duration recommendations: methodology and results summary. Sleep health, 1(1), 40-43.

Proper sleep (7-8 hours) is beneficial for helath

Reference: Chaput, J. P., McNeil, J., Despres, J. P., Bouchard, C., & Tremblay, A. (2013). Seven to eight hours of sleep a night is associated with a lower prevalence of the metabolic syndrome and reduced overall cardiometabolic risk in adults. PloS one, 8(9), e72832.

We should sleep from 6 to 8 hours

Best Regards Mohamadreza Rezaei Ahvanooei

6-8 hours depending on the person's age.

I agree with Prof. Islam Issa Omran

Please go through the following PDF attachment.

Following the discourse.....

8 hours of sleep in 24 hours is enough

Ideally we should have at least 6 hours of uninterrupted sleep.

Unfortunately, many of us are unable to have it due to our many relevant projects we engage in to save our world as academics. However, we must not forgo constant breaks and relaxation during our work schedules because they help a lot.

During weekends, I strive hard to have the maximum rest to be able to face the week squarely with productive activities that would help develop my country and the world at large.

Enough sleep depends on age. 7-8 hours time is enough for mature people. Children need more than 10 hours a day.

On the spot Hazim.....

6- 8 hours of sleep in 24 hours is enough