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15 amazing facts about sleep that will surprise you!

Do we dream in color or black and white? Can we commit a crime while we sleep? Which mammal sleeps longer and which sleeps less? How long can we survive without sleep?

If you want to get an answer about these and other surprising questions, do not miss today this article!

1. for each age group, the right rest

Certainly older people need less sleep than newborns! How many hours of sleep do we need in different lifetimes? Here is a summary of the average hours of rest for each age group:

  • 16 hours – children under 3 years;
  • 10 hours – children up to 12 years old;
  • 8 hours – adults up to about 50/60 years of age;
  • 6 hours – adults over 60 years of age.

2. dreaming is normal?

Certainly! In fact, the complete absence of dreaming during sleep is a symptom of personality disorders!

3. what do men and women dream?

Dreaming is normal during sleep; but gender difference affects “what” we dream. According to the research, the men dream of other men for something 70% of the time, while the women are more balanced because they dream men and women. One rule applies to both: we dream only faces that we have already seen, even if we do not remember them!

4. could you commit a crime in your sleep?

Apparently it is! Some sleep disorders, such as sleepwalking, allows people suffering from it to commit walking or involuntary actions!

Among the most common crimes there are: driving while asleep, signing bad checks and aggression!

5. separated in the bedroom?

A common practice among many married couples, about 1 in 4 couples, is to sleep separately. This does not necessarily happen because of “couples problems” but mostly for convenience reasons!

6. what is worse: insomnia or fasting?

Certainly the sleep! In fact, we could survive without food for about 2 weeks, but the lack of sleep can be fatal in less than 10 days!

7. How long could we resist without sleep?

The experts in this field are the British soldiers who have developed a special technique to stay awake for a long time: 36 hours!

8. do we remember all dreams?

No, but often we don’t seem to make dreams, because 5 minutes after waking up we have forgotten about 50% of dreams, after 10 minutes we have forgotten almost everything: namely 90%.

9. what do blind people dream?

People who have not always been blind dream as sighted people; but even blind people see in their sleep: in fact, your brain can create a visual impression from the information that gets from touch, hearing and smell. Obviously with some differences.

10. do we dream in colors?

Yes, at least most of us. Today 75% of people dream in color but before the introduction of color television the percentage was15%! In addition, most of our dreams are silent!

11. which mammal sleeps longer and which less?

The sleepiest is the koala with 22 hours per day! In contrast, giraffes sleep only a few hours in total per day, with several 5-10 minute sleep breaks during the day!
12. half of the dolphin sleeps!

Dolphins also sleep, but in an unusual way: they can “switch off” only half of the brain, while the other half gets a position during the breathing cycle.

13. how much time do we sleep and how much do we dream?

On average, a person sleeps for 230,000 hours of their life, about 26 years, and 6 of those years we dream!

14. what is the biggest distraction that can give us sleep disorders?

Simple. Internet 24 hours a day.


15. what is the best sleeping position?

Each of us has a favorite, but if it is not clear to them what is the best for you to fall asleep, note the position you are in the morning when the alarm clock rings: it should be the favorite of your body!