At noon in summer, the sun is like fire. Due to the high ambient temperature, blood vessels in the skin are easy to expand, and a large amount of blood is concentrated on the skin, resulting in the imbalance of blood distribution in the body, especially the decrease of blood in the brain, resulting in a temporary phenomenon of relatively insufficient blood supply to the brain, which makes people feel listless and sleepy. Therefore, taking a nap is very important.
Eliminate fatigue and restore energy. In the morning, people's energy is always vigorous, because after a night's rest, the internal functions of the body have been rested, and the fatigue of the previous day has disappeared. However, after working or studying all morning, due to the high concentration and tension of physical and mental strength, new fatigue appears again, and the heat in the human body is also consumed in large quantities. At this time, the physiological function not only needs to compensate the consumed calories, but also needs to properly eliminate fatigue and restore energy so as to work and study better in the afternoon.
Supplement sleep, relieve summer heat and reduce fever. In summer, the days are long, the nights are short and the weather is hot. Birds call cicadas in the morning, mosquitoes bite flies at night, and the heat attacks people. People fall asleep late at night and wake up in the morning, which not only has a short sleep time, but also has poor sleep quality. It is more necessary to take a nap to supplement the lack of sleep at night. And because noon is the hottest time of the day, people's heatstroke mostly occurs around noon. At this time, if you can take a nap and relax, you will reduce the occurrence of heatstroke.
Enhance physical strength and improve function. Although nap is not the main sleep, and the time is short, but its role can not be ignored. Taking a nap is not only beneficial to make up for the necessary sleep time and make the body have a full rest, but also has a good effect on improving the function of the blood supply system of the brain, enhancing physical strength, eliminating fatigue and improving the work efficiency in the afternoon. At the same time, taking a nap can also enhance the body's epidemic prevention function. In addition, taking a nap can also reduce the incidence of cerebrovascular accidents.
Protect the brain and relieve tension. When sleeping, not only the nerve cells in the cerebral cortex are protected and restrained, but also all parts of the body are fully rested, the muscles of the whole body are relaxed, the physical strength consumed by activities can be gradually recovered, and various organs inside the body can work quietly and regularly.