Don't rush to sleep after dinner.

Myth: Generally, after a nap, people will feel refreshed, so they think that as long as they have a nap, they can achieve the effect.

Note: In fact, everyone knows that taking a nap in summer is very important, but the effect of taking a nap is not based on people's feelings, but depends on how and how long they sleep. The easiest time for people to fall asleep is 8 hours after getting up in the morning, or 8 hours before going to bed at night, which is about noon 1. At this time, people's alertness is in a natural decline period, and their bodies will get a good rest. The most suitable time for a healthy nap is 15 ~ 30 minutes, and the longest time should not exceed 1 hour, which is too short to meet the requirements of rest; If it takes too long, you will wake up with a slight headache and general weakness, and it is not easy to wake up at this time. It is best to extend it to 1 ~ 1.5 hours, a complete sleep cycle.

In addition to paying attention to sleep time, you should also pay attention to hygiene during a nap. Don't eat too greasy things before going to bed, and don't eat too full, because greasy will increase blood viscosity and aggravate coronary artery disease, and satiety will increase the digestive burden of the stomach. In addition, many people are used to sleeping after lunch. At this time, the stomach is just full of food, and a large amount of blood flows to the stomach, blood pressure drops, and oxygen supply and nutrition to the brain drop significantly. Falling asleep immediately will cause insufficient blood supply to the brain. Therefore, it is best to do 10 minutes of activities before taking a nap, such as walking, to facilitate food digestion.

You can't sleep on your stomach during a nap.

Myth: Many people attach importance to siesta, but not to sleeping position. They either take a nap on their desks, or find a cool place to sit and rest, thinking that this is a nap.

Note: Although taking a nap is just a nap, it must not be too casual, otherwise it will not only fail to achieve the effect of rest, but also affect your health. Most people don't pay attention to the posture of taking a nap, some sleep on their stomachs, and some simply sleep on their desks. You know, sleeping at a desk will reduce the blood supply to the head, and people will have a series of symptoms such as dizziness, dizziness and fatigue after waking up. At the same time, using your hand as a pillow will oppress your eyes, which will easily induce eye diseases over time. Lying on the table will oppress your chest, affect blood circulation and nerve conduction, and make your arms and hands numb.

The ideal nap posture should be lying down comfortably, supine or lying on your side, preferably lying on the right side with your head high and your feet low. This can relieve the pressure on the heart, prevent snoring and help the food in the stomach move to the duodenum.

At the same time, we should pay special attention to the surrounding environment when we take a nap in summer, because the muscles relax, the capillaries dilate and the sweat pores are wide after falling asleep. If the air conditioner or fan is turned on and blown at the body, it is easy to catch a cold, arthritis or other diseases. Don't worry after waking up, stand up slowly, drink a glass of water to replenish blood volume and dilute blood viscosity, and then you can do some light activities such as walking. However, people often feel trance when they wake up for the first time, so don't engage in complicated and dangerous work immediately.

Three kinds of people are not suitable for taking a nap.

Myth: It is generally believed that everyone should take a nap in summer, especially the elderly who are in poor health. I think a nap helps to recover from physical fatigue.

solve