How to take a nap without hurting the cervical spine

　　According to relevant surveys, only nearly 30% of people have the habit of taking naps regularly, and 80% of these people have improper sleeping postures and improper sleep time, which greatly reduces the quality of their naps.； More than half of the people think that taking a nap is not necessary and they only do it perfunctorily when they are too sleepy. Since the temperature is higher at noon in summer, during the body's cooling and perspiration process, skin The capillaries are dilated, the blood distribution in the body is unbalanced, a large amount of blood is retained in the periphery, and the blood supply to the brain is relatively insufficient. After a busy morning of work and study, people generally feel tired and in poor spirits. If you take a nap correctly after lunch, your body will make timely adjustments, which is very beneficial to your work and study in the afternoon. So, how to take a nap more scientifically and efficiently? healthy Woolen cloth? Experts recommend that you pay attention to the following points:
　　
　　Don't eat greasy food before going to bed, and don't eat too much. Greasy food will increase blood viscosity, aggravate coronary artery disease, increase the burden of gastric digestion, and affect the quality of lunch breaks.
　　
　　sleep Pillows should be used when sleeping, which can reduce stress on the heart, prevent snoring, and help gastrointestinal function.
　　
　　The nap position should be lying flat on your back or on your side.
　　
　　The length of nap time can be determined according to the sleep state at night and the degree of fatigue at work in the morning. Generally, it should not be too long, about half an hour is appropriate. If the time is too long, you will fall into deep sleep and feel dizzy after waking up.
　　
　　Do not take a nap while sitting or lying on your stomach. Napping at the desk or sitting down will reduce the blood supply to the head, causing symptoms of cerebral ischemia and hypoxia such as dizziness, dizziness, and tinnitus after waking up. Over time, it can also cause spinal deformation, lumbar muscle strain, etc. Some people use their hands as pillows and lie down on the table to take a nap. This puts pressure on the eyeballs, compresses the chest, affects breathing, and affects blood circulation and nerve Conducted, causing numbness and tingling in both arms and hands.
　　
　　Do not lie down and sleep casually on the corridor, under the shade of a tree, on the grass, or on the concrete floor, and do not sleep in a draft. Because the function of the body temperature regulation center decreases during sleep, severe cases of cold cold , in mild cases, it is easy to cause physical discomfort after waking up.
　　
　　Avoid strong external stimulation. After falling asleep, your muscles relax, your capillaries dilate, and your sweat pores enlarge, making you more susceptible to colds or other illnesses. disease , but also pay attention to protect yourself from wind and cold, and avoid air conditioners and fans blowing directly on your body.
　　
　　After waking up, do light activities. After taking a nap, stand up slowly and drink a glass of water to replenish blood volume and dilute blood viscosity. Do not engage in complex and dangerous work immediately.