How many hours a day do you need to sleep? Detailed answer

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How many hours a day do you need to sleep? Detailed answer

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How many hours a day do you need to sleep?

Contrary to one of the most common recipes for a healthy lifestyle, eight hours of sleep is a rather dangerous thing.

Adults who get eight hours of sleep die younger than those who get by on six or seven hours.

In 2004, a University of California professor Daniel Kripke published an article in the American Medical Association's Archives of General Psychiatry that had a truly explosive effect. Of the 1,1 million volunteers who participated in the six-year survey, significantly more men and women remained alive by the end of the survey, who slept less than eight (but more than four) hours a night. The average Briton sleeps six to seven hours, which is an hour and a half less than our grandparents slept. In 1900, nine hours of sleep was considered the norm.

There is some evidence that sleep deprivation leads to short-term loss of memory, intelligence, and reasoning ability.

Leonardo da Vinci spent almost half of his life in a dream. Like Einstein, the great Italian artist and scientist took short naps throughout the day, fifteen minutes every four hours. The eminent lexicographer Dr. Johnson rarely got out of bed before noon. The French philosopher Pascal spent most of the day in his bedroom.

On the other hand, well-known long-livers elephants sleep for two hours a day. Koalas sleep twenty-two hours, but live only ten years. Ants, as noted earlier, sleep only a few minutes a day.

It takes the average person seven minutes to fall asleep. People with normal healthy sleep wake up 15-35 times a night.

To date, eighty-four types of sleep disorders are known to medicine, including: insomnia, excessive snoring, narcolepsy (daytime attacks of irresistible sleepiness), apnea (temporary cessation of breathing during sleep) and restless legs syndrome. There are twenty-five "sleep clinics" in the United Kingdom, and they are all literally "inundated" with patients.

Twenty percent of all crashes on British motorways are due to drivers falling asleep at the wheel. The most reliable way to prevent this condition is to pinch a strand of hair with a car sunroof.

The second most reliable way is to eat an apple. This stimulates digestion and provides a slow release of energy, much more effective than a brief caffeine shake.

Author: John Lloyd, John Mitchinson

Random interesting fact from the Great Encyclopedia:

What grade did the teacher give at school for the design of the current US flag?

The US flag changes every time new states are admitted to the state - new stars are added. The last time the flag was changed was in the late 1950s, when Hawaii and Alaska were granted statehood. More than 1500 options for the location of the stars came to the name of the president, and in the end, the option of 18-year-old Robert Heft was adopted. Although the teacher at the school, to whom he first handed over the project, put 4 with a minus for the work, and jokingly promised to revise the grade if the US Congress approved his project. And so it happened - and the teacher had to change the grade to 5.

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