First, running is a whole-body exercise, which can make the muscles of the whole body contract and relax rhythmically, increase muscle fiber and increase protein content. Muscular and healthy,,,

Second, running can exercise bones, skeletal muscles and joints.

Bone is the support of the body and the lever of human activities. Teenagers in the growth and development period can improve blood circulation, increase nutrient supply to bone cells, improve the growth ability of bone cells, and thus promote the normal development of bones. The metabolism of the elderly is weakened, muscles are gradually atrophied, bones are degenerated, and bone and joint diseases are increasing. Persisting in running can strengthen metabolism and promote physical growth.

Third, running can exercise the heart.

The heart is the general hub of blood supply to the whole body and the driving force of life.

Long-term running will make your heart muscle stronger and increase the content of protein and myoglobin. Under the X-ray perspective, it can be clearly seen that the athlete's heart is bigger than the average person, with a plump appearance and a strong pulse. The average person's heart volume is 765-785 ml, while those who insist on exercise can reach1015-1027 ml, and the heartbeat is slower than that of normal people 10-20 beats/min, thus reducing the workload of the heart. On the other hand, running can enhance the endurance of the heart. As we all know, when the heartbeat exceeds 100 beats/minute, the average person will feel dizzy, flustered and asthmatic. Long-term runners can tolerate 150 times/minute.

4. Running can increase vital capacity,

People can't live without oxygen for a moment, inhaling fresh oxygen and exhaling carbon dioxide. Vital capacity and maximal ventilation are important indexes to measure the health of respiratory function. Running can develop respiratory muscles and increase vital capacity 1-2 liters. The maximum oxygen uptake of trained athletes is 33-60% higher than that of ordinary people.

5. Running can enhance gastrointestinal peristalsis, increase the secretion of digestive juice, improve digestion and absorption capacity, thus increasing appetite, supplementing nutrition and enhancing physical fitness.

6. Running increases human metabolism, promotes digestion and absorption, regulates nervous system function and improves endocrine function.

Seven, running can temper people's will and perseverance, enhance toughness and patience, improve sensitivity and promote adaptability to the environment. People who insist on exercising for a long time have three characteristics when completing quantitative work: 1. They act quickly; 2. It has great potential, and can exert its maximum functional potential to complete the task; 3. Quick recovery, quick and thorough fatigue elimination, and quick recovery to a calm level.

but

Before each run, you should do some proper gymnastics to exercise your muscles.

Otherwise, it is easy to cause joint injury and muscle strain.

When the physical condition is bad and the symptoms of the disease are serious, it is not recommended to do sports such as running, otherwise it is likely to aggravate the condition.

And don't run within an hour after meals, otherwise it will cause diseases such as gastrointestinal discomfort.

Proper exercise, reasonable nutrition and adequate rest are the basic elements to enhance resistance.

The imbalance of protein, fat, carbohydrate, vitamins and minerals in diet has a great influence on exercise ability and the speed of physical recovery.

Foods with high protein and low fat not only have obvious effects on controlling weight and increasing strength, but also can accelerate the elimination of fatigue.

Running can also lead to the loss of trace elements in the body. Excessive water loss in the body will lead to blood concentration and slow blood flow, which will affect the oxygen supply to muscles and the elimination of metabolic wastes, causing muscle soreness.

Excessive salt loss will make muscles weak and easy to fatigue.

Therefore, paying attention to supplementing various nutrients in an all-round way is also the key to eliminating fatigue, promoting physical recovery and improving body resistance.

"Male, 16 years old, what disease can you prevent by running 1000 meters every day?"

To sum up:

Under a reasonable and balanced diet, normal people should run 1000 meters every day.

Can enhance body resistance, improve immunity, and prevent or improve various diseases.

Such as heart and circulatory diseases, motor system diseases, digestive system diseases, respiratory system diseases, endocrine system diseases, reproductive system diseases, nervous system diseases, etc.

The specific mechanism will not be developed one by one, otherwise two days and two nights will be endless.

I hope it helps you,,,