Why is it most likely to feel sleepy at noon in summer?

There is a proverb that goes: "Spring is sleepy, autumn is sleepy, and summer is a nap." The high temperature in summer does make people feel depressed all the time, especially at noon when they are most likely to feel sleepy. Being able to take a nap at this time can refresh people so that they can continue their afternoon work with enough energy. Therefore, some people figuratively say that taking a nap is equivalent to drinking half a pound of milk. But you have to be careful, otherwise it will be counterproductive.

Be particular about nap time

Don’t sleep right after a meal: Generally, it is better to arrange the nap time to half an hour after lunch, and do not sleep right after a meal. Because you have just had lunch, your stomach is full of food, and your digestive function is in motion. Taking a nap at this time will affect the digestion of your intestines and stomach.

Don’t take a nap too long: A healthy nap is most appropriate for 15 to 30 minutes, and the longest should not exceed 1 hour. If the time is too long, you will have a slight headache and general weakness when you wake up, and it is not easy to wake up at this time. It is better to extend it to 1 to 1.5 hours and conduct a complete sleep cycle. And napping for too long can easily affect your sleep at night.

Don’t take a nap on your stomach

Some office workers don’t have time to go home at noon, so they just sit or lie down at their desks to take a nap. "Position" is not only not conducive to eliminating fatigue, but also harmful to health. Because when the human body is in a sleep state, the muscles of the whole body relax, blood circulation slows down, and the blood supply to the head decreases. Due to the position of the person taking a nap while sitting, less blood is supplied to the brain, making people prone to a series of symptoms of cerebral ischemia and hypoxia such as dizziness, dizziness, and fatigue after waking up.

As for resting at the desk, this method is not advisable. Because sleeping at the desk will compress the eyeballs and cause excessive intraocular pressure. If this happens every day, the eyeballs will swell and the eye axis will grow, resulting in high myopia and damage to vision.

The ideal nap position should be to lie down comfortably, on your back or on your side. It is best to lie on your right side with your head high and your feet low. This reduces stress on the heart, prevents snoring, and helps move food from the stomach toward the duodenum.

Don’t force a nap

It is generally believed that everyone should take a nap in summer, especially the elderly who are in poor health. They feel that a nap can help recover from physical fatigue. But experts believe that taking a nap is not suitable for everyone.

There are three types of people who are at great risk from napping: one is people over 65 years old or 20% over the standard weight; the other is people with very low blood pressure; the third type is people with poor blood circulation system People with severe impairment, especially those who suffer from frequent dizziness due to narrowing of blood vessels in the brain. Because the blood in the brain will flow to the stomach after lunch, the blood pressure will decrease and the oxygen supply to the brain will be less. If these people take a nap at this time, they are prone to stroke due to insufficient blood supply to the local brain.

"Summer nap" is also known as "summer burnout" in medicine. It is caused by the hot summer and high temperature, which causes the human body to sweat a lot, and a large amount of potassium can be excreted with the sweat, and Because potassium cannot be replenished in time, people suffer from fatigue and lack of energy in summer.

Potassium is an indispensable element in the human body. Generally, the body of an adult contains about 150g of potassium. Its main function is to maintain the normal function of nerves and muscles. Therefore, once the human body is deficient in potassium, normal movement will be affected.

Potassium deficiency in summer not only reduces energy and physical strength, but also reduces heat tolerance, making people feel tired and weak. Severe potassium deficiency can lead to acid-base balance imbalance, metabolic disorder, arrhythmia, muscle weakness and laziness in the body. At this time, some people drink too much salt water in order to make themselves sweat less. As everyone knows, doing so can easily increase the burden on the heart and cause the potassium and sodium balance in the body to become imbalanced. Appropriate supplementation of potassium will help improve the balance of potassium and sodium in the body, which can not only prevent blood pressure from rising, but also prevent blood pressure from being too low. Here are some foods with high potassium content:

1. Among grains, buckwheat, corn, sweet potatoes, soybeans, etc. are high in potassium.

2. Among fruits, bananas are the richest in potassium.

3. Among vegetables, spinach, amaranth, coriander, rape, cabbage, celery, green onions, green garlic, lettuce, potatoes, yams, fresh peas, edamame, etc. contain higher amounts of potassium.

4. Seaweeds are rich in potassium. For example, seaweed contains 1640 mg of potassium per 100 grams, which is 175 times the sodium; kelp contains 22 times the sodium; hijiki contains potassium. It is 3.1 times that of sodium. Therefore, seaweed soup, steamed seaweed fish, seaweed meatballs, cold kelp shreds, kelp stew, etc. are all top-notch potassium-supplementing dishes in summer.