I can’t sleep alone in an empty room. I can’t help thinking about you. I look at your photos and my eyes are blurred with tears. I also look forward to seeing you again. Your sweet words and vows come to mind again and again, and I can’t forget your face. I cried my eyes red and fell into the endless abyss. I really love you with indifference, and the more heartache I have, the more I can’t escape. You forgot the promise you made to me, and you forgot that you loved me so much.

Recently, I read this sentence: Maybe you feel out of place with your surroundings, but it is the time you spend alone that makes you more and more interesting. When people finally notice you one day, they will find a cooler person than they thought.

History is a mirror, so it is wise to learn from the past and know the present. Attaching importance to history and learning from it is a fine tradition in the history of Chinese civilization for more than 5,000 years. Opening the history of China, there have been countless glories and some humiliations. The glories make Chinese people proud, while the humiliations inspire people to forge ahead.

The glorious history makes Chinese people excited, and the humiliating history makes us feel heavy. Most of the time, we are in the former mood when visiting museums, but we are in the latter mood when visiting the China Sino-Japanese War Museum on the Liu Gongdao in Weihai.

China Sino-Japanese War Museum is located on the Liu Gongdao in Weihai, Shandong Province. It is a national first-class museum and a memorial museum with the theme of Beiyang Navy and Sino-Japanese War. It is also the most complete preserved, the largest number of existing and the largest group of cultural relics in modern coastal defense facilities in China.

A large number of precious cultural relics are displayed in the museum, including two giant naval guns emerging from the seabed, each weighing more than 20 tons, which are the only ones left in the world. Through cultural relics, pictures, wax figures, sand tables, models and other exhibition forms and film and television means, it vividly reproduces the historical features of the Beiyang Navy and the Sino-Japanese War.

When you enter the museum, the first thing you see is a warship model, which was once called the "Dingyuan" ship model of Asia’s largest ship. Dingyuan was the flagship of the Beiyang Navy of the Qing government in the Sino-Japanese War of 1894-1895. At that time, it was the world’s most advanced first-class armored warship imported from Germany.

According to the on-site staff, in the early morning of February 5th, 1895, the ship Dingyuan was attacked by a Japanese navy torpedo boat in the defending battle of Weihai. Ding Ruchang ordered the ship to run aground to the south of Liu Gongdao before it sank, and used the naval guns on board to strengthen the defense force of the East Exit. Ding Ruchang was forced to withdraw from Dingyuan and transfer to Zhenyuan. On the afternoon of 10th, Ding Ruchang and Liu Buchan ordered to blow up the stranded Dingyuan ship with water mines.

Japan’s war of aggression against China was premeditated. The museum showed some letters of Japanese officers at that time. They used the Korean Peninsula as a springboard and base to invade China. When the Qing army sent troops to support North Korea, it suffered a heavy defeat in Pyongyang, which led to the fall of the Korean Peninsula.

On November 6, 1894, when the Japanese army invaded Jinzhou City, 10 women and children from the Qu family in the west street of the city resolutely threw themselves into the well to avoid being humiliated by the Japanese army. In February, 1896, Wang Zhixiu, a fellow coastal defense expert in Jinzhou Hall, heard about it and wrote "Ode to Qushi Well" to record his deeds. The museum fixed the picture at that time in the form of pictures and wax figures.

On November 21st, 1894, the Japanese invaders captured Lushun, located in Liaodong Peninsula, and massacred the city for four days and three nights, known as Lushun Massacre. It is said that only 36 people in charge of burying bodies (after investigation, more than 800 survivors) survived the massacre, and the number of victims was estimated to be between 20,000 and 20,000. The museum recorded the inhumanity of the Japanese invaders with pictures and documents.

The Sino-Japanese War of 1894-1895 was a great pain, which humiliated the country and the people. With the theme of the Sino-Japanese War of 1894-1895, the museum exhibited more than 650 precious historical pictures of the Sino-Japanese War, copied a large number of weapons and equipment during the Sino-Japanese War, and restored and reproduced a number of surreal figures, such as "the scene of Qu’s family throwing wells in Jinzhou" and "the scene of Li Hongzhang’s negotiation in Shimonoseki", which was the first in China.

After the failure of the Sino-Japanese War of 1894-1895, the Qing government decided to make peace with Japan and sent Li Hongzhang as an ambassador for peace talks to Shimonoseki, Japan. In a hotel in Maguan, Japanese Prime Minister Hirofumi Ito led the Japanese side to compete with Li Hongzhang. After this negotiation, the Qing Dynasty was forced to compensate Japan for 200 million taels of military expenditure (equivalent to six years’ national treasury revenue of Japan). After Japan got the money, its strength immediately rose to a higher level, and it became one of the world’s great powers, thus starting the evil road of militaristic aggression.

This is Wen Yiduo’s "Song of Seven Sons. ahava": Let me guard the oldest sea in China, and the hills of the original saints are here. Mother, don’t forget that I am an expert in preventing the sea. I have a Liu Gongdao as my shield. Come back quickly, the time has come. The remains of saints are buried behind me! Mother! I want to come back, mother!

At the end of the museum, there is a huge "History is here to think" written on the wall, and in the center of the hall is a bronze clock engraved with the words "The alarm bells will ring, and we will strengthen our coastal defense …". The Sino-Japanese War of 1894-1895 made the Chinese nation face life and death, and it also completely awakened the Chinese nation! The Qing government died quickly because of this war. In the process of reform and anti-aggression, the Chinese nation seized the opportunity of life and ushered in a new dawn!

The waves of the Yellow Sea seem to be silently telling the sad song of the Sino-Japanese War. Visiting this unique museum of the Sino-Japanese War of 1894-1895, our mood is very complicated, even hard to hide our grief. At the same time, it is not difficult for us to see the unyielding character of the soldiers of the Beiyang Navy who fought bravely against the enemy. We should remember this history, and we will be beaten if we fall behind, and the pace of striving for strength will become more and more firm.

Leicester city VS Leeds United

Leicester City defeated the Rangers away from home, and the league won 9 consecutive victories. The team’s recent performance is still hot, and it currently ranks first in the league with 39 points. Leicester city’s offensive end is active, and the stability of defense line is extremely strong. Leeds United beat Hadders at home in the last league. Although the team has experienced some ups and downs recently, it still wins more and loses less overall. At present, it ranks third in the league with 25 points. Leeds United’s offensive output is equally strong, but the defense strength is really insufficient in the near future.

Leicester city’s recent performance is still strong, and the team is currently at the top of the league. At the same time, the team’s home performance is also very strong. Leeds United is still winning more and losing less in the near future, but its overall stability is still insufficient compared with its opponents, especially the team’s recent defensive line is unstable. This time, leicester city is sitting at a strong home, and I believe there is still a chance to win the opponent’s winning streak.

Las palmas VS Atletico Madrid

Las palmas defeated Alme, the underdog in the last league, and the team has won many victories in the underdog recently. At present, it is chasing the 10th place in the league with 14 points. Las palmas’s offensive output has been strengthened, but the stability of the defense line is still insufficient. Atletico Madrid defeated Alaves at home in the last league, and the league won six consecutive victories. The overall state and stability continued to rise, and it is currently ranked third in the league with 25 points. Atletico Madrid’s offensive output has been continuously improved, and its defensive performance is acceptable, but the situation of zero sealing has been reduced.

Las palmas’s recent achievements have indeed warmed up, but the opponents are mostly weak teams in the league, and the gold content is really not high. The team’s performance at both ends of attack and defense is still obviously insufficient in the face of strong teams. Atletico Madrid’s recent performance is still strong, and the front line output is still very stable, but the defensive strength needs to be improved. This time, Atletico Madrid is a guest to challenge the opponent. I believe it is still a cinch to take away three points.

Paris saint-germain VS Montpellier

Paris Saint-Germain beat brest away from home in the last league, and the league won three consecutive victories and five unbeaten rounds. The team’s recent performance has been getting stronger and stronger, and the difference between the team and Nice at the top has narrowed to one point. The offensive output of Paris Saint-Germain has been strengthened again, but the defensive strength needs to be strengthened. Montpellier beat Toulouse at home in the last league. Although the team lost away from home before, its overall performance is still strong in the near future. At present, the team ranks sixth in the league with 15 points. Montpellier’s offensive output is still significantly strengthened, but the defensive end is also not stable enough.

The overall strength of Paris Saint-Germain is very secure, and the team’s recent achievements and performance are also worthy of recognition. In addition, the team has also found the home court advantage. The overall performance of Montpellier has also improved recently, winning several victories, but it is still difficult to compete with Paris in terms of strength. Montpellier’s visit to challenge Paris this time, I believe it is still a situation of losing less and winning.

Porto VS Lille, esto

Porto defeated Visala away from home in the last league, and won two consecutive victories in the league. Although the team suffered defeat in the face of traditional powerful teams, it still had no pressure in the face of other opponents. At present, the team ranks third in the league with 22 points. Porto’s offensive output is very secure, and the stability of the defense line has also improved. Lille, esto, lost to Polti in the last league, and the league suffered another three-game losing streak and seven rounds. At present, it only ranks at the bottom with four points. Esto Lille’s offensive performance is also relatively active, but the defense loopholes are also huge.

Porto’s overall strength is very secure, and the team is still able to face other opponents in the league, and the performance at home is also very safe. Rival esto Lille’s recent performance is still sluggish, although the offensive output is still guaranteed, but the defense loopholes are too large. This time, Porto sat at home to meet the challenge of the vice squad leader. I believe the team still has the ability to beat the opponent and win three points.

Bologna VS lazio

Bologna drew with Sassuolo in the last league. Although the team’s winning ability is not strong, it can still guarantee the unbeaten game in nine rounds, and the overall stability is acceptable. At present, the team ranks eighth in the league with 15 points. Bologna’s offensive output has strengthened, but the stability of the defense line has declined. Lazio beat Florence at home in the last league, and the league won three consecutive victories. The team has been in a strong state in the near future, and it can also win battles in a row. At present, it ranks seventh in the league with 16 points. Lazio’s offensive efficiency has improved, and the stability of the defense line has improved.

Bologna’s overall performance is quite stable. It has previously drawn against strong teams such as Juventus, Inter Milan and Naples, and it has a strong ability to score points in the main battle. Lazio, the opponent, has been strengthening in recent days, and it is also in a winning streak. Although the team’s performance in the away game is not good, most of its opponents are league teams, and they also have the ability to score points away from home. This time, the two teams collided, and Bologna, who performed very steadily, still had a chance to defend the unbeaten home, and the possibility of a draw between the two sides was not small.

Looking back on the fashion trend in 2023, winter has not been considered as the most fashionable season. In addition to the new year and holiday styles, we often fall into a fixed pattern of wearing the same clothes every day. However, some new trends appeared last winter, and they are still very popular today. For example, loose jeans (in fact, any loose clothes) have become very popular. They bring a new and tattered silhouette, which is different from the traditional straight tube or mom jeans. In addition, low-waisted jeans have become popular again, becoming the y2k fashion trend in 2023.

Mini UGG boots were a big trend last winter. Almost everyone is obsessed with mini UGG. Although they are warm and comfortable, they are not suitable for walking through snow and mud in Boston’s cold winter.

Finally, let’s talk about coats. In winter, many different styles of jackets become fashionable, and some jackets are back in fashion. For example, long dresses have always been popular. This year, we have seen a large number of long dresses, from wool to leather. A long dress can enhance the taste of any clothing, keep warm and win-win. On the other hand, we have seen the rise of short cotton-padded jackets. Although these are not the most practical purchases for the weather, they can give people a good outline and are very suitable for warmer winter days.

When winter is over and warm spring is coming, we hastily change our heavy winter clothes into light and breathable ones. Like other seasons, the wardrobe in spring has its signature items-long skirts, flowing shirts and light-colored jeans. But what is exciting is that we have seen the rise of grunge, Ballet Style and y2k Fashion, which have persisted throughout the year.

Under the influence of y2k fashion, overalls are back in fashion. Originally designed for military use, overalls are easy to identify because of their multiple pockets and loose tailoring. Work pants can be worn in a variety of ways, and can be matched with baby T-shirts, corsets, etc. It is an important item that is more substitutable than jeans or trousers in our wardrobe.

In another alternative aesthetic trend, doll style has become very popular. Doll style refers to anything feminine, pink and feminine. In the spring of 2023, we saw many trends, such as ruffles, light pink, lace tops, bows in hair and so on. Although this trend started in spring, it remained strong all year round.

Completely changing the direction, the denim trend on denim became popular in the spring of 2023. Mixing denim with different colors and patterns has become a high fashion. With the development of denim trend, there are new trends, such as denim long skirts, which bring a more exquisite appearance to our usual denim mini skirts.

Warm weather makes dressing easier. No longer obsessed with jackets and heavy clothes, the perfect summer dress usually consists of shorts, T-shirts or light summer dresses. However, if the goal is to improve the rotation this year, there are many different fashion trends that can add some new ideas to our daily wear.

In the summer of 2023, y2k fashion was in full swing. Baby T-shirts, lace vests and miniskirts in the early 2000s dominated the fashion style. With the rise of fashion in the 2000s, second-hand shopping and consignment shopping became popular-not only did the early 2000s clothes return, but also sustainable shopping became popular. In summer, we saw a lot of baby T-shirts, trimmed vests, low-waisted denim skirts/shorts, etc.

Crocheting is a big trend in summer, from crocheted vests to bikinis and even skirts, crocheting is popular in fashion. Once the temperature rises, crocheted items will always return. But don’t get me wrong, this is not another short-lived trend. Crocheted items are becoming a model of summer style, surpassing the status of "fashion" and becoming a must-have item in summer.

"Shut up and take your legs." Active exercise is always one of the important ways to keep healthy. At present, there is sufficient evidence that adequate physical activity can not only help to maintain a healthy weight, but also enhance physical fitness and reduce the risk of all-cause death and chronic diseases such as cardiovascular disease and cancer. Ma Guansheng, a professor at Peking University School of Public Health, said that exercise not only helps to adjust psychological balance, relieve stress, depression and anxiety, but also improves cognition, sleep and quality of life.

According to the definition of the World Health Organization, physical activity refers to any physical activity produced by skeletal muscles that requires energy consumption, including professional physical activity, traffic-related activities, housework and physical activity in leisure time; Physical activity intensity refers to the amount of effort/force used to describe physical activity, which can be measured by metabolic equivalent MET, heart rate or self-perceived fatigue. The greater the intensity of physical activity, the more energy is consumed.

Moderate-intensity physical activity refers to activities that require some exertion, and the heartbeat and breathing are accelerated, but you can still talk easily during the activity, such as walking quickly, dancing, leisure swimming, and doing housework, such as cleaning windows and mopping the floor. High-intensity physical activity refers to more exertion, faster heartbeat and shortness of breath, such as jogging, aerobics, fast pedaling, playing tennis, competition training, heavy physical activities, such as lifting weights, lifting heavy objects or digging.

So, how much exercise is appropriate every day?

"Overall, 60-75% of the total energy consumption of the human body is used for basic metabolism; 5-10% is used for food heating effect; The proportion of physical activity is 15~35%. " Ma Guansheng said that according to the daily energy intake of adults of 1600~2400 kcal, the physical activity consumption of 15% is about 240~360 kcal. In other words, the daily activity of adults should reach the energy consumption of 240~360 kilocalories.

Generally speaking, the energy consumption of doing housework and occupation-related physical activities every day is about 60~80 kilocalories compared with 2,000 ~ 2,500 steps of walking. 6000 steps of active physical activity (fast walking at 5.4~6.0km/h) takes about 40 minutes and consumes 170 kilocalories. The total energy consumption of these physical activities is about 230~250kcal.

Maintaining this level of exercise can probably meet the requirement of energy consumption of 240~360 kilocalories per day.

The Dietary Guidelines for China Residents (2022 Edition) suggests that people of all ages should take physical activities every day, and adults are recommended to actively take daily activities and exercise, and take moderate-intensity physical activities at least five days a week for more than 150 minutes; Take 6000 steps of active physical activity every day. (Reporter Liu Xiaoxiao Shi Lan)

Source: China Economic Net

Voltaire said: Life lies in movement.

The ancients did not deceive me. Insisting on exercise can not only bring us a tall and graceful posture and a rosy face, but also bring us magical changes in places we can’t see.

Over time, there will be a big difference between a life of exercise and a life without exercise.

Persist in exercise, and the ending of life can be complete.

Some time ago, a video "The Last Decade of Life" broke out on the Internet, which showed two completely different lifestyles of fitness and non-fitness in the last decade of life:

One is to walk in the park in sneakers every morning, and the other is to sit on a sickbed with an infusion tube in his hand and look at the sky outside through the window;

One is to travel around by bike and play with children and grandchildren, the other is to sit in a wheelchair, be taken care of and eat a bunch of pills;

One is to wear a suit and tie, get together with family and share delicious food, the other is to wear a hospital gown and hang an oxygen mask, and the whole family is guarding the ward.

After watching the video, many people were silent.

At the end of our lives, the level of health determines whether we can leave with dignity. And this health is a reward for insisting on exercise.

A survey report published in the British Journal of Sports Medicine, which lasted for 15 years and involved 80,000 people, shows that ordinary people can reduce the risk of death by 28% through physical exercise.

From now on, stick to exercise, whether jogging or hiking, there is always a sport for you.

You will see that you are getting better and your life is getting better.

Fat and bloated no longer, replaced by tight lines; Exhaustion is swept away, and I am radiant and energetic every day.

The benefits of exercise may not be visible in the short term.

However, after one year, five years and ten years, you will live younger and happier than your peers.

You can go further, see more beautiful scenery and enjoy more beautiful time on the road of life.

Insisting on exercise brings five benefits.

1. It helps to sleep. Modern people are under great pressure, and many people suffer from insomnia. In addition, with the growth of age, people’s sleep patterns will change and their sleep will become shallow.

Studies have shown that women who take walks and other aerobic exercises for at least one hour four times a week have a 50% higher sleep quality than those who don’t like sports. Therefore, insisting on exercise can be described as a very effective "sleeping pill".

2. Controlling weight and keeping fit is the only way to keep fit. Exercise, especially aerobic exercise, needs to burn fat to provide energy. During exercise, it consumes calories and has the effect of reducing fat.

In addition, some strength-based exercises can exercise people’s muscles well, enhance their metabolic ability, increase their daily energy consumption, avoid the accumulation of calories to form fat, and make their muscles have a sense of lines, making people fit and sunny.

3, delay aging, prolong life With the growth of age, all functions of the human body will decline, while insisting on exercise will increase muscle mass, making people still have a good body when they are old, and exercise can slow down the decline of various system functions of the body and prolong life.

According to foreign reports, after people reach middle age, insisting on aerobic exercise can delay physiological aging for 12 years.

4. Exercise improves brain function and intelligence. People often use "developed limbs and simple mind" to describe people who exercise and keep fit, but in fact, people who love sports are not simple at all.

Exercise can not only strengthen people’s physique, but also promote brain development, improve and improve brain function, and contribute to intellectual development. During exercise, people can enhance their memory by remembering the movements and essentials of exercise.

5. Reducing the risk of cancer Lack of exercise is an important cause of obesity. More and more epidemiological evidence indicates that obesity will increase the morbidity and mortality of some cancers, such as endometrial cancer, breast cancer, esophageal cancer and colorectal cancer.

Therefore, persistent exercise and weight control can reduce the risk of cancer.

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Physical activity preparation questionnaire

Before you plan to exercise, please read carefully and answer the following six questions according to your actual situation for your safety.

whether or not

□□ Did the doctor tell you that you have a heart disease or can only participate in physical activities recommended by the doctor?

□□□ Have you ever felt chest pain or severe breathlessness when you are engaged in physical activities or sports?

□□ Since last month, have you ever felt chest pain or severe breathlessness when you have not participated in physical activity or exercise?

□□ In the past 6 months, have you ever fallen down or lost consciousness because of dizziness when you were engaged in physical activities or sports?

□□□ Do you have any bone or joint pain or dysfunction aggravated by physical activity or exercise?

□□ Did the doctor tell you that your blood pressure is over 180／110mmHg?

If you answer "Yes" to any of the above questions, please stop taking part in this fitness exercise and pay attention to: (1) consult a doctor before taking part in the fitness program and explain which question in the questionnaire is answered "Yes"; (2) Take part in fitness activities step by step, gradually adapt, the intensity of exercise should not be too large, and the time should not be too long; (3) You can restart the fitness mode that has been proved to be safe; (4) You can also participate in activities recommended by doctors or activities allowed by doctors; (5) timely use of necessary medication.

If you answer "No" to all the above questions, you can continue to exercise, but please pay attention to the following: (1) Take part in a large amount of exercise or exercise intensity gradually to avoid excessive fatigue; (2) Take part in further health evaluation, and work out the best fitness program accordingly.

Note:This questionnaire was established by the research group of Professor Wang Zhengzhen of Beijing Sport University with reference to relevant materials. It is suitable for people aged 15-69, and people over 69 should consult their doctors before doing fitness activities.

In recent years, with the in-depth implementation of national fitness, people’s participation has been continuously improved, and "more exercise and less illness" has increasingly become a social consensus.

What are the benefits of regular exercise to human health? What are the important principles of the scientific movement? How can we avoid sports risks? Our reporter interviewed Zhang Yimin, a professor at Beijing Sport University and director of the Key Laboratory of Sports and Physical Health, and asked him to answer questions.

Late-night exercise is extreme

Scientific movement is a good doctor. "Scientific exercise can not only effectively improve heart and lung function, promote human metabolism, strengthen muscle and ligament strength, but also make people happy physically and mentally, enhance their ability to resist stress and promote their physical and mental health." Zhang Yimin said that "integration of physical education and medicine" is an important way to implement the Healthy China Action, which plays a positive role in improving and promoting people’s health.

Is there a best time to exercise in a day? "In fact, when exercise has little effect on the fitness effect. From the factors that affect the fitness effect, the key is that the exercise load should match the individual’s physical health." Zhang Yimin introduced that the time period of people’s exercise is mainly influenced by the schedule. "Take me as an example, I am busy with teaching and preparing lessons during the day and have no time to exercise, so 18: 00-20: 00 after work will be the best time for me to exercise."

In recent years, some gyms in first-tier cities have launched 24-hour gyms to cater to the "special work and rest time" of office workers. According to the fitness statistics released by Leke in July last year, in Beijing, the proportion of fitness people from 22: 00 pm to 8: 00 am the next day is 12.8%. In the whole country, the proportion of members who exercise during this period is close to 10%.

Do sweaty exercise in the middle of the night when you should be sleeping. Is this exercise a plus or a minus for your health? "I think it is to reduce points. Late-night exercise is a bit extreme, which may disrupt the biological rhythm." Zhang Yimin reminded that it is more appropriate for office workers to squeeze out 30 minutes to 1 hour for exercise before dinner after work. If you occasionally work late in special circumstances, such as getting off work at 10 o’clock in the evening, and you really want to exercise, it is recommended to take a light activity for 30 minutes and sweat. "You know, rest is also an important way to eliminate fatigue, and exercise is systematic and long-term. If you don’t exercise one day, you can continue to exercise later. It is unnecessary and discouraged to exercise late at night."

Now it is the spring season, and many people who have been "cats" for a winter have begun to go outdoors and exercise their muscles. "In fact, any season is suitable for exercise, but beware of extreme weather." Zhang Yimin stressed that don’t exercise in cold, hot, high humidity, strong wind, pollution and radiation environment; The temperature difference between spring and autumn is large, and the temperature is low in the morning and evening. Pay attention to the influence of temperature and wind when exercising; Exercise in summer should guard against heatstroke; If there are special circumstances such as smog and sudden drop in temperature in winter, it is not recommended to do outdoor sports.

Don’t forget to stretch after exercise.

"Generally speaking, moving is definitely better than not moving." In Zhang Yimin’s view, scientific movement needs to follow the basic principles of safety, overall accuracy, step by step, perseverance and so on, and in terms of exercise mode, exercise intensity, exercise frequency, exercise duration and so on, it should be adapted to local conditions according to people and time.

Security principle. "It is very important to do warm-up activities before exercise and stretching exercises after exercise, but the latter is often ignored by many people." Zhang Yimin pointed out that during exercise, human muscles constantly contract and exert their strength, and their elasticity decreases. If they don’t stretch for a long time after exercise, these problems may be brought about: local inflammatory factors and metabolic wastes can’t be discharged, which leads to increased fatigue and slower recovery; The next training with fatigue will increase the risk of injury and induce sports injuries such as "running knee".

"If the muscles in the hind leg feel hard, and the knee joint is already tired or faintly uncomfortable, it may be caused by strain caused by not stretching after exercise." Zhang Yimin introduced that studies have confirmed that stretching after exercise helps to relax muscles and improve muscle elasticity, which is one of the "magic weapons" to reduce sports injuries. Stretching practice time should be at least 10 minutes, or about 1/3 of the duration of exercise.

Principle of comprehensiveness. Different types of exercise will bring different fitness effects, and the exercise methods are better, preferably including aerobic exercise, strength training and flexibility training. Aerobic exercise can make people’s heart and lung function better, and it also directly affects the activity ability of the whole body organs; Strength training helps to improve muscle strength and avoid problems in daily activities such as walking, running and jumping caused by insufficient strength; Flexibility training is stretching exercise, which can improve the stretching ability of muscles and effectively prevent sports injuries.

Principle of accuracy. As long as the fitness action standard and exercise load are reasonable, sports injuries can basically be avoided. The "fake" action of posing, not exerting force and nonstandard "wrong" action are the main causes of sports injury accidents. For example, "sit-ups with your head in your arms" is a typical non-standard movement, which may lead to sports injuries. If your hands are lightly placed behind your head or on your ears or chest, you should mainly use your abdomen to pull your trunk, instead of using your hands and head, which is not harmful, but also can exercise your core muscles well.

The principle of gradual progress. The frequency of exercise varies from person to person. Generally speaking, you should exercise at least three times a week, and it is best to gradually increase it to five times a week to ensure the fitness effect. No matter what your physical fitness level is, you should do what you can when exercising, and you can’t ignore the signals sent by your body. If you have dizziness, dizziness, chest pain, nausea, shortness of breath, palpitation, vomiting and other symptoms during exercise, you should stop exercising immediately and seek medical advice in time. If you have persistent and obvious fatigue after exercise, you should appropriately reduce the exercise time or times. When you feel in good physical condition, you can also exercise for a while.

The principle of perseverance. To achieve good fitness results, it is essential to participate in sports persistently. It is suggested that according to one’s physical health and sports ability, an achievable exercise goal should be established and a feasible exercise plan should be made. Work and rest should be combined in life to avoid giving up the exercise plan because of being too busy or too tired; We should understand sports from the height of "exercise is a part of life" and stick to it for a long time.

Avoiding sports risks in advance

Zhang Yimin pointed out that for most people, physical exercise is safe. However, special groups such as the elderly, children, pregnant women, menstruating women, those with heavy weight, and those who have been under exercise for a long time need to pay special attention to avoid risks before exercise.

People who don’t usually exercise regularly, especially the elderly, must start with low intensity (about 50% or slightly less of the maximum heart rate), short time (about 10 minutes) and long interval (exercise for 2-3 days a week), and then gradually improve the intensity after 3-6 months of adaptation; Children are highly excited during exercise, but they are easy to get tired. It is best not to let children do a single exercise for too long. For pregnant women and menstrual women, high-intensity exercise is not recommended, but moderate exercise within the body’s tolerance, such as walking; Heavy people are not suitable for running, in case they hurt their knees.

"Inappropriate physical exercise, such as exercise in bad environment, untimely exercise, exercise beyond physical endurance, exercise of people with congenital or acquired cardiovascular diseases, etc., may cause and aggravate pathological changes in the cardiovascular system, and cardiovascular accidents may occur. In severe cases, sudden death may occur." Zhang Yimin introduced that the main symptoms of cardiovascular accidents include chest tightness, chest pain, heartburn discomfort, syncope, abnormal dyspnea, etc. Common diseases include coronary heart disease, myocardial infarction, myocarditis, congenital cardiovascular abnormalities, etc.

"Generally speaking, if there is no problem with cardiovascular health, the risk of cardiac arrest or myocardial infarction caused by moderate-intensity physical activity is low. Most of those who died suddenly during exercise have been diagnosed or have hidden cardiovascular diseases. " Zhang Yimin pointed out that although the incidence of vascular accidents in sports centers is not high, it is harmful. In order to avoid the occurrence of vascular accidents in sports centers, we should properly understand the relevant health knowledge, consciously make full preparations and pay attention to self-protection in cold or hot and humid environments before doing fitness exercises. Follow the basic principles of different people and step by step, adjust mental state and control exercise intensity, so as to achieve the best fitness effect.