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A healthy nap of 15 to 30 minutes is the most appropriate, if it is more than 30 minutes, the body will enter a deep sleep period that is not easy to wake up, it is better to extend it to 1 hour to complete a whole sleep cycle.
If you take a nap for too long, you will have a slight headache and general weakness in the first half hour of waking up, which is caused by sleep inertia. Don't expect to wake up right away, it's back to normal after an hour's buffer.
However, this longer nap is only suitable for supplementing the lack of sleep the night before, and a truly healthy nap should not exceed 30 minutes, otherwise it is easy to disrupt the circadian clock and affect the normal evening sleep.
Research believes that human sleep is divided into two stages: light sleep and deep sleep, which are cyclical cycles. After falling asleep for more than 30 minutes, the average person will move from light sleep to deep sleep, when the inhibition process of the central nervous system of the brain deepens, many capillaries in the brain tissue are temporarily closed, the blood flowing through the brain tissue is relatively reduced, and the metabolic process in the body is gradually reduced. This is due to the fact that the inhibited cerebral cortex has not been lifted, the closed capillaries have not yet opened, and the brain has a temporary relative blood supply insufficiency, resulting in temporary autonomic nerve dysfunction, which can be as short as more than ten minutes and as long as more than half an hour to disappear.
If you want to take a nap, you should develop the habit of regular and quantitative daily routines. The best time to take a nap is 8 hours after waking up in the morning, and 8 hours before going to bed at night, which is in the middle of the day, around 1 o'clock in the afternoon. Because at this time, people's alertness is in a natural decline period, and the body will get a good rest during the nap at this time.
The habit of napping should be consistent, because irregular napping habits can also disrupt the biological clock and affect the regularity of evening sleep. For example, delaying going to bed until late in the evening is not only not helpful to your health, but also delays your ability to fall asleep at night.
Don't rush to take a nap after eating. Many people are accustomed to going to bed after lunch, and at this time, the stomach is just filled with food, a large amount of blood flows to the stomach, blood pressure drops, and the oxygen supply and nutrition to the brain drop significantly. Therefore, it is best to move for 10 minutes before napping to allow food to digest.
Pay attention to hygiene when taking a nap. Don't eat anything too greasy before going to bed, and don't eat too much, because greasy will increase blood viscosity, aggravate coronary artery disease, and oversatiety will increase the burden of stomach digestion. In addition, after waking up, you can drink a glass of water to replenish blood volume, dilute blood viscosity, and then you can do some light activities such as walking.
Pay attention to your sleeping position: The correct posture is to relax the trouser belt to facilitate gastrointestinal peristalsis and help digestion.
Don't sleep on your stomach during a nap. It is understood that most people do not pay attention to the posture of napping, some lie on their stomachs, and some simply sleep on the table. In fact, sleeping at the desk will reduce the blood supply to the head, and people will wake up with a series of symptoms of cerebral ischemia and hypoxia, such as dizziness, dizziness, and fatigue.
At the same time, using your hands as pillows will compress your eyeballs, which will easily induce eye diseases over time, and lying on the table will compress your chest, affecting blood circulation and nerve conduction.
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If nothing else, it should be too long to sleep, and a 15 to 30 minute nap is best.
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Three taboos for napping:
Do not sit on the sofa to sleep, which will affect the blood supply to the head, and it is easy to experience dizziness and dizziness after waking up. In the long run, a person's memory will fade or they may develop cerebral ischemia.
Avoid taking a nap immediately after lunch, people's gastrointestinal peristalsis is strengthened, blood circulation is accelerated, and falling asleep at this time will cause insufficient blood supply to the whole body and brain, and after waking up, it will be more tired and uncomfortable.
Do not wake up violently after waking up after a nap after waking up the heartbeat slows down, the blood supply to the body is small, the heart and cerebral blood vessels are relatively constricted, if you wake up, it will inevitably make the heart and cerebral blood vessels expand rapidly, which is easy to cause cerebral hemorrhage.
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I do that sometimes
--The best way to take a nap is to take a nap in bed, relax your body, preferably sleep on your changing side, half an hour is enough, and no more than an hour at most. If you can't sleep for a while, it doesn't matter, close your eyes, abandon distracting thoughts, and lie quietly for half an hour, you can also get the effect of a lunch break.
With the development of science, the way of napping has changed accordingly. In recent years, some scientists have proposed to change the nap after meals to nap before meals. Because, the traditional nap after meals, full and sleepless, affects the quality of napping, after waking up, I feel dizzy, weak, and lazy, which has an adverse impact on work and study in the afternoon.
Some studies believe that taking a nap for half an hour before a meal is more effective than taking a nap for 2 hours after a meal, and can greatly improve the efficiency of work and study in the afternoon. The way to take a nap before a meal is to eat some fruit or drink a glass of milk after work or school, then take a half-hour nap before getting up for dinner.
Some people take a nap at the desk, which is not a good habit. Because, there are two major disadvantages of napping at the desk: one is harmful to the eyes.
Temporary blurred vision after napping is the result of corneal deformation and curvature change caused by compression of the eyeball at the desk. Sleeping at your desk for long periods of time can cause impaired vision. the second is to sleep at the desk and compress the chest, affect breathing, and increase the burden on the heart; At the same time, it will also affect blood circulation and nerve conduction due to the pressure of the head, resulting in numbness and tingling in the arm.
In addition, sitting for a long time will also lead to a lack of oxygen in the head, a temporary physiological "brain anemia", dizziness, tinnitus, weak legs, fatigue and other symptoms. Therefore, the habit of napping at the desk must be corrected.
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It may be that the time is too long, half an hour after the person sleeps is considered a light sleep state, which is enough as a lunch break at noon, if the time is longer, it will enter a deep sleep state, the deep sleep state generally lasts for a few hours, if you do not reach the forced wake up, you will have a headache.
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How old are you? You should go to the pain department of the hospital, you can have your cervical spine checked, and if there is no problem, you can have a stellate ganglion block, which works well.
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Hello, this is a manifestation of physical weakness, it is recommended to use the medicine Gankang, cefixime capsules, pay attention to drink more warm water.
If you do not have a fever, it is recommended to drink plenty of water and avoid hot food. Avoid exertion, keep warm, and wish you good health.
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