Can this nap make the brain younger by 6.5 years? Expert: Posture is important

Spring fatigue, autumn fatigue, summer fatigue, hibernation,Entering two volts,Many people feel tired,I want to take a nap at noon.For a nap,Will you remember after 8090The scene of lying on the desk and sleeping in the morning during school,Even if you're not sleepy, you have to lie there pretending to sleep,Because there is a teacher supervising who hasn't slept,So, Chinese people's nap habitsIt was nurtured from a young age

Spring fatigue, autumn fatigue, summer fatigue, hibernation,

Entering two volts,

Many people feel tired,

I want to take a nap at noon.

For a nap,

Will you remember after 8090

The scene of lying on the desk and sleeping in the morning during school,

Even if you're not sleepy, you have to lie there pretending to sleep,

Because there is a teacher supervising who hasn't slept,

So, Chinese people's nap habits

It was nurtured from a young age.

But is a nap really just necessary? Many people say that foreigners have little habit of taking a nap, which is related to our dietary habits. We usually have a habit of eating staple foods at noon, and often eat more fully. At this time, our whole body's blood will be given priority to the gastrointestinal tract for digestion, and the brain will cause brief hypoxia, leading to drowsiness. Foreigners usually have a relatively simple lunch, such as vegetable salads, sandwiches, etc. Their intestines do not need so much blood for digestion, so they are less likely to feel sleepy.

So from a medical perspective, do people need to take a nap? Professor Huang Manli, Deputy Director of the Department of Mental Health at the First Affiliated Hospital of Zhejiang University School of Medicine, stated that there was once an experiment called the "Rhythm Experiment of Human Sleep and Awakening" that confirmed that a fully awake state in humans can last for about 4 hours, followed by drowsiness. Relevant data shows that 1 a.m. and 1 p.m. and 2 p.m. are the most likely time points for people to feel tired, indicating that nap is a normal physiological requirement, So we don't have to doubt whether we are "extremely poor" because we feel sleepy every day until noon. If conditions permit, we can take a nap if we want.

The latest research conducted by researchers from foreign institutions suggests that taking a nap may help our brain maintain health. Compared to people who do not have a nap habit, those who have a nap habit have a brain capacity that is 2.6 to 6.5 years younger, which is a sign of good brain health. The related paper of this study has been published in the journal Sleep Health.

A study released at the 2019 annual meeting of the American College of Cardiology (ACC) showed that napping not only improves alertness, but also helps lower blood pressure. A heart disease expert from Greece explained that taking a nap can reduce overall blood pressure by an average of 5mm Hg, while a decrease of 2mm Hg in blood pressure can reduce the risk of heart attack.

Taking a nap can also protect your eyesight. The ciliary muscles of the human eye rest during sleep, and the lacrimal glands also begin to secrete tears, nourishing the eyes that have been used all morning and effectively preventing vision loss.

Professor Huang Manli stated that a sleep cycle is divided into slow eye movement (REM), light sleep, deep sleep, and rapid eye movement (REM). If someone wakes up in early stages such as falling asleep or light sleep, they will not feel tired, while those who wake up in deep sleep or deep sleep often feel drowsy and confused. Therefore, the nap time should be as short as possible, preferably within half an hour.

And experts emphasize that the best way to take a nap is to lie down. However, considering the limited conditions of the vast majority of office workers, the office can prepare a U-shaped pillow that can be worn around the neck during a nap and rested against the back of the chair. Regardless of the sleeping posture, do not sleep with your hands on your chest, as this can cause physiological pressure and affect sleep quality.

Source: Chao News

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