A table I saw (Source: National Sleep Foundation) gives age-wise sleep needed per day:
Newborns (0-2 months): 12-18 hours per day
Infants (3 to 11 months): 14 to 15 hours per day
Toddlers (1-3 years): 12-14 hours per day
Preschoolers (3-5 years): 11-13 hours per day
School-age children (5-10 years): 10-11 hours per day
Teens (10-17): 8.5-9.25 hours per day
Adults: 7-9 hours per day
Your views are welcome! - Sundar
Dear Ljubomir, I´ve no explanation. But I´m sure (the same happens to me sometimes) we are no automats or robots, who can arbitrarily be switched on and off. Take it as it is.
Do education systems prevent sleep, e.g. children think about homework/exams and therefore cannot sleep well?
Dear Marcel - I was told that some kids play video games and spend many hours..
Dear @Sundar, this paper and its research results gives the answers! An article How much sleep do we need? by Michele Ferrara and Luigi De Gennaro is attached!
I was fast with my first answer, since I had an article behind. Let me explain. I have a sleep problems. Sometimes, when problems are present, I do catch myself sleeping too log, escaping from the problems (maybe collecting power)! The second situation is that if I go to bad too late, I get out of the bed too early! Does someone have an answer for such behaviour?
I sleep only after 10.00.p.m. I have breaks in my sleep. I get up and do some thinking activity. Cumulatively I sleep for anywhere between 4.5 hours to 6 hours on any day. On Sundays I would get up late..
Dear Ljubomir, I´ve no explanation. But I´m sure (the same happens to me sometimes) we are no automats or robots, who can arbitrarily be switched on and off. Take it as it is.
OK my dear @Hanno, I will take it as it is! I have remembered a question on sleeping regarding babies! Why do babies cry to fight sleep?
https://www.researchgate.net/post/Why_do_babies_cry_to_fight_sleep
Dear Ljubomir: My opinion in an evolutionary framework is ' Crying stimulates milk production in mothers and milk contains chemical that promote sleep also to favor growth?'
Adults under 50 need only between 5 and 6 hours by night, and a very short nap in the early afternoon, or simply to stay with eyes closed as in meditation for a very short space of time.
Some people have too many deadlines, and they get very less sleep. As a result, even their normal work get affected, and they spoil health with taking too much coffee all day, late night snacks, food and we discussed all these issues in many threads (kindly go through my list of questions).
As friends pointed out, we may learn to say "No", before committing ourselves into too much of workload. Walking, physical activities, green tea, and diet food help us in getting adequate sleep.
When I visited Manipal Institute of Technology (Manipal University), India, I was very glad to see faculty with their family and students walking, jogging, and playing games in green lawn, walk/playground area near the campus called "Valley View". At one point of this area, we get a very nice view of Manipal Valley, which is inspiring.
Best wishes, Sundar
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