Spring is the season when everything grows and brings forth the new.
At this time, the hail melted and warmed, and the yang in nature began to rise, and everything showed a thriving scene. "Man corresponds to heaven and earth", at this time, the yang in the human body also conforms to nature and diverges outward. Therefore, in spring, we must master the comfortable characteristics of qi movement in spring, and pay attention to protecting the yang in the body to make it constantly abundant and gradually vigorous, so as to avoid damaging the yang and preventing it from happening.
This is the basic principle of spring health preservation. Specifically, we should pay attention to the following aspects: First, keep warm and cold. Spring is the transitional season of cold winter and hot summer, and it is at the turning point of yin retreating from yang and cold turning into heat. At this time, the yang is gradually flourishing, but the yin and cold are not exhausted.
Due to the activity of cold air, the climate is changeable and the temperature difference is great. Therefore, "spring clothing" means "spring clothes are not busy" to meet the needs of hair growth due to yang, and it is also a good self-care method to prevent diseases. On the one hand, people should relax and stretch, on the other hand, they should be soft and warm. People who are frail and sick, old and frail should pay special attention to keeping warm, and beware of "cold in spring hurts people". It is best to keep the room temperature above 15℃, and cover a slightly thicker quilt on the principle of not sweating when sleeping.
Second, we should go to bed late and get up early. When the temperature rises in spring and the spring breeze blows gently, people's skin gradually relaxes, the function of circulatory system is strengthened, the blood supply around the skin is increased, sweat gland secretion is increased, and the load of various organs is increased, which has a sedative and hypnotic effect on the central nervous system and makes people sleepy. Folk call it "spring sleep". The best way to overcome "spring sleepiness" is to follow the laws of natural changes of human body and the principle of keeping in good health in spring: go to bed late and get up early, and ensure a certain amount of activity time.
Get up in the morning, unbutton your buttons, relax, take a walk in the courtyard, breathe fresh air, and make your mind and gas field endless. Third, we must be careful to avoid common cold. Chinese medicine believes that "wind is the beginning of all diseases."
It means that many diseases are often related to common cold. The key to keeping in good health in spring is to avoid the wind.
Modern medicine also attaches great importance to the relationship between airflow (wind) and health, because the change of airflow can affect people's breathing, energy consumption, metabolism and mental state. Moderate airflow makes the air clean and fresh, which is beneficial to health, while abnormal airflow is harmful to human health.
Due to the windy effect in spring, the heat exchange between air and skin is intensified, so that the body loses too much heat, which leads to the decline of people's disease resistance. Therefore, we must pay attention to wind and evil spirits in spring.
Fourth, be happy in spirit. The spirit of spring should conform to the characteristics of the growth of all things in nature in spring. "Make them alive." In other words, by adjusting modality, the yang in the body can be dispersed and kept in harmony with the external environment.
Spring should be in the liver, which is the qi in the heart. If you are slightly affected by * * *, you will be agitated. Therefore, in spiritual cultivation, we should be open-minded and optimistic, and avoid anger when things happen. "Anger" is the leader of emotional diseases, which is extremely harmful to human health, because anger not only hurts the liver, but also hurts the heart, stomach and brain, which leads to various diseases, so anger is the most taboo emotion for all people.
5. Be diligent in exercise. Spring is the best season for exercise. Beautiful spring, fresh air, warm wind blowing gently, everything is bloom.
This kind of environment is conducive to the human body to vomit the old and absorb the new, and promote the circulation of qi and blood. Because of the cold winter, people mostly move indoors and rarely move outdoors, so the functions of the thermoregulation center and internal organs also decline to varying degrees. When muscles and ligaments are inactive for a long time, they will be more atrophied and unable to contract.
After entering the spring, you should choose suitable outdoor activities according to your physical condition, such as walking, traveling, practicing Qigong and fishing. These outdoor activities can make you fully enjoy the negative ions floating in the air, which is beneficial to the growth and development of bones.
Sixth, people should not only pay attention to the beauty care in spring from the perspective of health, but also the beauty problem can not be ignored. Outdoor activities have increased because of the warmer weather.
Dermatologists believe that sunlight, air and environmental climate will cause changes in skin visibility. In order to avoid skin aging, try not to be exposed to the sun for a long time in spring. Outdoor activities should first apply sunscreen and emollient, and pay attention to hydration.
Water is a beauty product, so you must drink more water in spring. The way to drink water is: drink water on an empty stomach or before meals in the morning, but don't drink water before going to bed, so as not to cause eyelid edema and then develop into bags under the eyes.
Mineral water and fresh fruit juice are the best drinking water, and light tea is also a good drink. Seven, disease prevention and health care in spring, the climate is warming, and pathogenic microorganisms, bacteria, viruses, etc. are increasing. It will grow and reproduce, and it is prone to the occurrence and prevalence of infectious diseases such as influenza, pneumonia, meningitis and viral hepatitis.
Because of the cold and dry climate in early spring, it will directly affect the defense function of respiratory mucosa, and the disease resistance of the whole body will also decline, and some pathogenic substances will take advantage of it to get sick. Therefore, we must pay attention to disease prevention and health care in spring.
Health preservation in summer is in all seasons, and summer is the season with the highest yang in a year. The climate is hot and full of vitality. For people, this is a period of vigorous metabolism. The yang of the human body is outside and the yin is inside, and the blood circulation is correspondingly vigorous and active on the body surface. Therefore, we should pay attention to protecting the human body's yang in summer to prevent it from being hurt by excessive greed in summer.
This is the so-called "nourishing Yang in spring and summer". Specifically, we should pay attention to the following aspects: first, we should go to bed late and get up early to adapt to the changes in nature.
In other words, getting up early every day conforms to the enrichment and exuberance of yang; Stay up late to adapt to yin deficiency. It's sunny in summer, so don't hate the scorching sun for a long time, or do proper exercise to adapt to the "nourishing" atmosphere in summer. Getting up early to receive the morning sunshine and fresh air is good for your health.
Because I go to bed late and get up early in summer, I don't get enough sleep. Especially the elderly, with the characteristics of false sleep and easy to wake up, are more likely to feel tired. Therefore, taking a nap in summer is an important health and fitness method, which can not only make up for the lack of sleep at night, but also meet the maintenance needs of human physiological characteristics.
The nap time is generally 1 hour, so pay attention to your sleeping position. You can lie on your back or side, cover your abdomen with a towel to avoid catching cold in your stomach and abdomen. Although the nap is short, it is beneficial to make up for the necessary sleep time, make the body have a full rest, restore nerve function, enhance physical strength, eliminate fatigue and enhance the protective function of the body.
2. Scientific discoveries or technological inventions about clothing
Scientific discovery or technical invention about clothing
At first, ancestors used weeds, bark and even animal skins to keep out the cold through simple production. The primitive hand weaving promoted the appearance of spinning wheel. Many textile tools, such as stone spinning wheels and ceramic spinning wheels, have been found in Neolithic sites such as Hemudu and Miaodigou in China. It shows that 7000 years ago, human beings were able to spin with plant fibers, which fundamentally changed the clothing situation of human beings and began to wear real clothes. After the formation of society, the clothes of dignitaries are naturally different from those of ordinary people. The so-called upper-class clothing has been extremely particular since ancient Rome, especially the ever-changing women's clothing. After thousands of years of development, clothing has entered the fashion era.
At first, people's clothes were simple, used to keep out the cold and protect themselves; Now it has become a fashion era. Because of the change of clothing, our life has also undergone subtle changes, which has promoted our development in clothing.
3. What is the science of dressing and sleeping?
What is the knowledge of dressing and sleeping?
From the point of view of health preservation and health.
Dress science:
1, underwear must be all cotton. Cotton is not only breathable, but more importantly, it is harmless to the body.
2, female * * *, preferably white. Changes in leucorrhea can be found at any time and in time. Abnormal, see a doctor at once.
3, pay attention to the human body * * * parts and joints to keep warm. Cold air can easily invade the human body from these parts. Therefore, colds are high.
Burns and arthropathy are common diseases.
4, spring cover, autumn frozen. Don't undress at will in spring. Because people are different from ordinary animals and have no characteristics of hibernation. So, Chun
It is a season of high incidence of diseases. You can't add clothes at will in autumn. Adapt to the changes of seasons, especially the arrival of winter.
5, it is definitely not just grace, not temperature.
Sleep science:
1, 2 hours before going to bed, no food. In order to reduce the burden on the stomach, increase the effect of falling asleep and prevent people from getting fat.
2. Develop a scientific and good life pattern. Adults must fall asleep every night 10:00- 10:30. In the morning,
You must get up on time from 06: 00 to 06: 30. Ensure the normal operation of human meridians. When the meridians are opened, all diseases are eliminated.
3. Sleeping on the right side can reduce the pressure and burden on the heart. Conducive to health and longevity.
4, remember: stay up late, shorten life, harm the body; Sleeping late will accelerate the loss of calcium in human body.
4. A little common sense about science
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Original publisher: Long Yuan Journal Network.
1. Why do the stars twinkle?
We see starlight shining, not because the luminosity of the star itself changes, but because of the occlusion of the atmosphere.
The atmosphere is between us and the stars. When starlight passes through the atmosphere, it will be affected by the density and thickness of the atmosphere. The atmosphere is not absolutely transparent, and its transparency will change according to its density. So when we look at the stars through it on the ground, we will see that the stars seem to be flashing.
2. Why do sunflowers always bloom towards the sun?
There is a substance called "auxin" in the stem under the sunflower disk. This substance has the function of accelerating replication, but it is anti-optical, and it will run to the backlight side whenever it encounters light.
So when the sun rises, the stem of the sunflower immediately hides to the side of the backlight, as if the whole plant is bent in the direction of the sun.
Why does the hair turn white when people are old?
There is a substance called melanin in our hair. The more melanin, the darker our hair will be. Without melanin, hair will turn yellow or white. When human beings reach old age, various functions of the body will gradually decline, and the formation of pigments will be less and less, so the hair will gradually turn white!
4. Why do fireflies glow?
Fireflies emit light because there is a luminous body at the end of their abdomen, which is filled with a lot of phosphorus-containing luminescent substances and luminescent enzymes, so that fireflies can emit flashing light.
6. Why do babies cry all the time when they are born?
There is science everywhere in life, science in life, science in diet, science in sports, and even science in dressing.
Let me answer, there are many scientific tips in our life. For example, "What's the crackling sound when you take off your sweater?" "Why does a flat ping-pong ball bulge when scalded by boiling water?" Wait a minute. Now, I'll explain them to you one by one.
I remember last summer vacation, my mother brought some ping-pong balls back, and we rushed to get them. We throw table tennis on the ground like a pinball and let it bounce. Suddenly, the sound of "ga" attracted our attention. It turned out that my cousin's ball was accidentally crushed by him, and he immediately sat on the ground and began to cry. Mother put its ball in a bowl filled with boiling water. Slowly, the ball bulged. My cousin didn't want the wet ball, so he changed it with me. I asked my mother, "Mom, why did the flat ping-pong ball swell up in boiling water for a while?" Mom said: "This is based on the principle of thermal expansion and cold contraction. The air inside the table tennis is heated and its volume expands. When the flat place is pushed up, the table tennis will recover. "
One winter, I found another problem.
One night, when I took off my thick sweater to get ready for bed, I heard the crackling sound of my sweater and was very curious. I ran to ask my mother, "Mom, why does my sweater make noise when I take it off?" Mom said, "It may be static electricity. I have no idea. "
I'll get dressed right away and check the information. Oh, it turns out that this is electrostatic discharge caused by friction. When we wear sweaters during the day, our bodies and clothes are charged because of constant exercise and constant friction between sweaters and shirts, shirts and bodies. These positive and negative charges overlap and discharge, so we will hear a "click" sound. Ah, I see. It turns out that there are so many tips about science in life!
So we should explore bravely and acquire knowledge by ourselves.