A few days ago, Zhang Chaoyang, chairman of the board of directors of Sohu, told the media that "I only sleep for 4 hours a day" and "I have to wake up with an alarm clock in the middle and stay fully awake for 1 hour";
And declared that this "sleep well" and "everyone is worth a try".
Zhang Chaoyang's sleep method will really sleep well? Is it worth trying and promoting for everyone with no specific group of people?
Zhang Chaoyang, you are a superman, don't say sleep 4 hours a day, even if you don't sleep at all for life, you may be one of the most successful people in the world.
However, please do not use casual recommendation to everyone, take this strange sleep dafa to harm others.
We know that sleep is a typical cyclical physiological activity, and this periodicity of sleep is driven by two mechanisms.
Circadian rhythms:
In the past, when there was no artificial illumination, people "worked at sunrise and rested at sunset", mainly because daylight signals were transmitted to a structure called "pineal gland" in the brain, inhibiting its secretion of "melatonin", which drives the circadian rhythm of sleep, thus keeping people awake and alert during the day.
When night falls, daylight is gone, melatonin production is no longer inhibited, secretion gradually increases, and usually at 10 to 11 o'clock produces a "blowout" secretion peak that drives people to sleep.
Therefore, in general, falling asleep after more than 11 o'clock violates the natural circadian rhythm of sleep, which is to stay up late.
Brain Energy Metabolism Cycle:
Another dynamic that drives sleep is the time cycle of staying awake, which is largely mediated by the accumulation and clearance of a "waste product" of energy metabolism in the brain.
This energy metabolism waste is adenosine produced by the metabolism of adenosine triphosphate (ATP), a bioenergy carrier.
Studies have known that people in a waking state consume a lot of energy in the brain, and ATP is constantly consumed to produce adenosine.
Adenosine is an inhibitory neurotransmitter in the brain that binds to adenosine receptors to produce fatigue, laziness (decreased active sexual behavior) and drowsiness by inhibiting the release of dopamine, and is another major force driving sleep.
Interestingly, adenosine can be broken down during sleep, and after hours of sleep, the adenosine produced and accumulated during wakefulness is removed.
This is the main mechanism by which when we wake up after hours of adequate sleep, we can sweep away our previous drowsiness and feel refreshed.
It is also the reason that we need a certain amount of time to "sleep enough", if the sleep time is not enough to remove the adenosine "garbage" in the brain, we cannot restore the spirit.
"People must guarantee 8 hours of sleep a day", which is a cliché about sleep time.
In fact, this 8-hour has a "qualifier", which refers to the average sleep time that most adults need per day and night.
However, sleep needs vary greatly across age groups, especially between different people.
This means that some people can sleep for as few hours a day as "enough sleep", while others may need to sleep longer per day than others.
Recognizing this, the American Sleep Foundation gave a broader amount of suitable sleep time when revising new sleep guidelines in 2015.
And this suitable sleep time is divided into a "recommended time range" for most people, and "may be suitable for some people's sleep time".
For example, for adults, the previous recommended time of only 7 to 9 hours has now added "sleep time that may be suitable for some people", meaning that depending on the individual's specific situation, 6 to 10 hours of sleep every 24 hours may be appropriate.
In its concluding paragraph, the guidelines state that it may be appropriate for some people to sleep longer than recommended, but very few can deviate significantly from the normal range. People who habitually sleep very much or very little,(even if they feel good about themselves) may show signs or symptoms of serious health problems that could be detrimental to their health and well-being if they had to sleep that way.
This passage seems to have been specially prepared for Zhang Chaoyang.
In Zhang Chaoyang's claimed sleep dafa, sleep 4 hours a day, but also divided into 2 2-hour sleep segments, set an alarm clock in the middle to wake yourself up, and stay fully awake for 1 hour, and then sleep for a second 2-hour period.
Zhang Chaoyang's method of deliberately interrupting continuous sleep can be said to have committed the biggest taboo of healthy sleep, and it is the worst sleep method, and there is no one.
Studies have known that our nighttime sleep can be divided into several 90-minute sleep cycles, each of which goes through 4 stages, namely light sleep 1 and 2 stages, deep sleep stage and dreaming rapid eye movement sleep (REM) stage.
Studies have known that the various stages of sleep have different significance for the recovery of physical functions, the relief of fatigue, as well as learning and memory consolidation.
Among them, the deep sleep stage is the most important, and the relationship with sleep quality, learning and memory processing is the most close.
The longer the deep sleep, the better the quality of sleep, the more relieved the sleep, the more refreshed and energetic the next morning, the easier it is to remember and remember the things learned.
Deep sleep mainly occurs in the first few cycles of sleep, if you can sleep for several hours without waking up, you can get more deep sleep; on the contrary, if sleep is frequently interrupted, you need to "waste" more time in sleep latency (lying down to sleep to the time period when you really fall asleep) and light sleep and REM sleep.
Many people always complain about "dreaming all night", the main reason is that sleep is frequently interrupted, and more time is the result of rapid eye movement sleep "sleepland".
Not only that, but the Johns Hopkins University study also found that compared with the reduction of sleep at the same time, the forced wake-up of sleep leads to a more significant negative emotional impact - sleep is particularly annoying when woken up, and even about anger, which is a life experience for many people.
How serious can this annoyance be?
Do you remember the news that a woman in Hunan in 2015 frequently quarreled with her sleep and cut off three of the boy's fingers and genitals?
It is a portrayal of the impact of sleep interruption on sleep and mood.
Zhao Chaoyang sleeps 4 hours a day, and he also sets an alarm clock to deliberately wake himself up for 1 hour.
Or, Zhao Chaoyang is a superman, even if he does not sleep for 1 hour in his lifetime (anyway, sleep is a personal private matter, there is no way and no need to verify, all by touching the upper and lower lips) is still the most successful person in the world.
However, Zhao Chaoyang, as a representative of influential and successful people, recommends this kind of sleep Dafa that violates scientific and authoritative guidelines that "everyone is worth trying", which is a disaster.
Finally, the author "entrained a private goods":
Zhang Chaoren is so energetic, when to take some time to rectify the Sohu self-media platform, respect the original copyright of di si like the author.
Sohu's self-media platform "Sohu" created an account for the author without the author's knowledge, and almost completely reproduced the original articles posted on other platforms.
This not only seriously infringes the author's copyright, but also involves the theft of the author's private identity information.