Napping can restore our physical strength. Why do we sometimes feel listless after taking a nap?

Napping can restore our physical strength. Why do we sometimes feel listless after taking a nap?

Napping is really important, and only a reasonable nap method can achieve the best results. Don't rush to bed after a meal. Generally speaking, napping can make people feel energetic, so I think taking a nap at noon can be effective. Explanation: In fact, everyone knows that naps are very important in summer, but the effect of naps does not depend on people's feelings, but on how they sleep 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, at about 1 o'clock at noon. At this time, people's vigilance is in a natural decline period, and the body can get a good rest. A healthy nap is most suitable for 15 to 30 minutes, and should not exceed 1 hour at most. The time is too short to require a rest. If the time is too long, you will wake up with a slight headache and general weakness. You will not wake up easily at this time, but it will be extended to 1 to 1.5 hours.

In addition to paying attention to bedtime, naps should also be taken Pay attention to hygiene. Don't eat too greasy food and don't eat too full before going to bed. Because greasy food can increase blood viscosity and aggravate coronary artery disease, overeating can increase the burden of gastric digestion. In addition, many people are used to sleeping after lunch. At this time, the stomach is full of food, a large amount of blood flows upward, blood pressure drops, and brain oxygen and nutrients drop significantly. Sleeping directly may lead to insufficient blood supply to the brain. Therefore, it is best to be active for 10 minutes before taking a nap. For example, walking helps digest food. Do not lie down during nap. Many people pay attention to naps, but do not pay attention to sleeping posture. I consider sleeping on a desk or finding a shady spot to sit and rest a nap. (William Shakespeare, Hamlet, nap, nap, nap, nap, nap) Explanation: A nap is a nap, but not too arbitrary. Otherwise, not only the effect of rest will not be achieved, but also health will be affected. Most people don’t care about the nap position.

Experts said that ordinary newborns, sleep-deprived people, people engaged in mental work and students all need to take a nap. Especially in the hot summer, the brain response is slow, so taking a nap can help to restore the mind. In addition, people who are engaged in heavy manual labor or high-temperature work especially need to take a nap. Because people who work in high temperatures take naps and are closely related to the incidence of coronary heart disease. Because people who cannot take a nap during shifts are at a greater risk of coronary heart disease. Taking a nap for only 30 minutes a day can reduce the incidence of coronary heart disease20. Therefore, taking a nap plays a great role in preventing high temperature heatstroke. But sleeping during the day is not suitable for everyone. Some people attach great importance to resting at night and are not used to taking a nap, which has no impact on their health.

But there are three people who are not suitable for nap. One is for people over 65 years old or weighing more than 20 years old. Taking a nap will increase blood viscosity and make blood vessels prone to blockage. Another person is someone with very low blood pressure. The hot weather in summer is inherently bad for people with low blood pressure. Moreover, if you take a nap, your blood pressure will be relatively lower and breathing will become more difficult. The third person had severe disorders in his blood circulation system. In particular, the cerebral blood vessels become narrowed. After lunch, the blood in the brain of dizzy people flows upward, the blood pressure drops, and the oxygen supply to the brain decreases. If you take a nap at this time, the local blood supply to the brain will be insufficient and cerebral hemorrhage will easily occur. In addition, people with insomnia problems should also avoid taking naps during the day. If you can't sleep in the afternoon, do other relaxing things such as listening to music to keep yourself well rested and better prepared for work and study in the afternoon. (music).