In Huangdi Neijing, it is pointed out that "Yang is exhausted and Yin is exhausted", which means that in the middle of the night, when Yin is strongest and Yang is weakest, it is time to sleep; At noon and noon, when the sun is strongest and the shade is weakest, it is also time to rest. This is the principle of "sleeping at noon and taking a nap at noon".
Nowadays, with the extension of working hours and the acceleration of the pace of life, people often feel overwhelmed and exhausted. Going to bed late and getting up early has become a portrayal of people's lives. Therefore, taking a nap has become an important guarantee for many people to work all day. Chinese medicine believes that taking a nap can not only enhance physical strength, eliminate fatigue, improve work efficiency in the afternoon, but also enhance the body's protective function. So a nap has such a good effect? It's a pity not to know!
Although taking a nap is good for health, there are still doorways. Only by mastering the essentials can we achieve the expected results. If we don't get to the point, it may backfire.
First of all, don't eat too much or too greasy before taking a nap, especially after lunch. Just after lunch, my stomach was full of food. At this time, a large amount of blood flows to the stomach, blood pressure will drop, and the oxygen supply and nutrition of the brain will also drop. This is also the reason why people tend to feel sleepy after lunch. If they go to bed after lunch, it will lead to insufficient blood supply to the brain. Not only can't take a lunch break, but it is also easy to induce diseases; Eating too much at lunch will increase the digestive burden of the stomach. At this time, taking a nap is not conducive to the digestion of the stomach; Eating too greasy at lunch will increase blood viscosity, and taking a nap may aggravate coronary heart disease.
Secondly, don't take a nap for too long. After a long nap, I will feel uncomfortable after waking up. Generally speaking, a nap is a nap, and the nap time is usually a while, which is 15-30 minutes. If you take a nap for more than 30 minutes, it doesn't matter once or twice. After a long time, it will disturb the biological clock and affect the law of sleeping at night.
Thirdly, the posture of taking a nap is also very important. Don't underestimate the short nap time. It feels like a nap, but it is not too casual. I especially remember that in middle school, you took a nap at your desk and used your hand as a pillow, which was not good for your health. Generally speaking, sleeping on the table will reduce the blood supply to the head, making people prone to dizziness, dizziness, fatigue and other symptoms of cerebral ischemia and hypoxia after waking up; Using your hand as a pillow will put pressure on your eyes and numb your arms and hands. So, what is the posture of taking a nap? Generally speaking, it is recommended to take a nap on your back or side, with your head high and your feet low, and lying on your right side is the best.
Last but not least, don't catch a cold during a nap. You should cover a thin blanket during your nap to avoid catching a cold. Even in summer, cover your abdomen with a towel to avoid catching cold. In addition, when taking a nap, don't take a nap where there is direct airflow or air outlet to avoid catching cold.
In a word, taking a nap is good for human health. It can be seen that the sentence "A good sleep is better than tonic" is correct.