Nat Commun: Don't you take a nap yet? Naps help clear 'brain litter', new study suggests

Core Tip: In general, cerebrospinal fluid is a substance that removes metabolites and acts as a "sanitizer" in the brain, allowing more "sanitizers" to get into the brain and clean up the trash, while getting enough sleep at night helps to drain these metabolic wastes from the brain and maintain brain health.
office white-collar generally can be divided into two categories, one is "after lunch must take a nap star man", the other is "even if you do not take a nap, the afternoon is still brilliant star people."
, has long been regarded as a good way to maintain health, can relieve stress, maintain sharp, but as for why, but has been lack of scientific theoretical support.
recently published in Nature Communications, an animal study showed that taking a nap may help clean up "brain waste" and maintain human health.
naps or help remove "brain junk" research suggests that sleep helps clear the brain of harmful metabolites, such as amyloid beta protein, and can also strengthen memory.
sleep, more cerebrospinal fluid enters the lymphatic system, facilitating waste removal.
, however, it is unclear whether the movement of cerebrospinal fluid to lymphatic fluid is controlled by circadian rhythms.
So, the researchers conducted an experiment in which fluorescent tracer was injected into anaesthetized mouse cerebrospinal fluid pools at noon and midnight, and circulated for half an hour, using skull imaging techniques to find that cerebrospinal fluid tracer flowing into the brain during the day increased by about 53% compared to night, and that the inflow of tracer into the brain showed day-night changes and peaked at noon.
researchers also tested whether the cerebrospinal fluid inflow in sober mice also had this day-night change, but found no significant difference.
it's worth noting that the researchers also found that the discharge of cerebrospinal fluid also showed day-night changes, although the peak excretation of cerebrospinal fluid was the opposite of when cerebrospinal fluid entered the brain's lymphatic system.
Overall, cerebrospinal fluid, a substance that removes metabolites, acts as a "sanitizer" in the brain, allowing more "sanitizers" to get into the brain and clean up the trash, while getting enough sleep at night helps to drain the metabolic waste out of the brain and maintain brain health.
's going to happen when you take a nap, the more tired you get? After a morning of busyness and energy consumption, taking a nap at noon helps compensate for brain and physical exertion, and is very healthy.
, many people around me said, after a nap always feel tired, like being beaten up, what's going on? This may be caused by you sleeping too long or not sleeping in the wrong position.
, nap time is enough to be within 1 hour.
Sleep is shallow sleep, deep sleep two, after 80 minutes of sleep, sleep will be from shallow deep, brain blood flow decreased, if woke up in deep sleep, it is easy to cause insufficient blood supply to the brain, resulting in temporary disorders of plant nervous system function, let people feel dizziness, brain swelling, confusion and other discomfort.
, many white-collar workers like to lie down on their desks after a full meal to sleep, in fact, this way of sleep is harmful to health.
After eating enough, a large amount of blood into the gastrointestinal system, sleeping on the ground is not conducive to blood circulation, easy to make the brain more isoemia, and sleeping on the ground will compress the chest, increase the burden of the heart and lungs, is not conducive to food digestion.
it is generally recommended to eat enough after a little walk digestion and then lie flat, side-lying posture to sleep.
From a physiological point of view, the body's brain cells usually last 4-5 hours of excitement time, proper lunchtime can eliminate fatigue, restore physical strength, but also help promote the removal of brain metabolites, why not?