There is really, really no other way except exercise and fitness.
There are nine systems in human body, namely, exercise system, cardiovascular system, respiratory system, digestive system, urinary system, reproductive system, lymphatic system, nervous system and endocrine system. These nine systems jointly maintain the healthy operation of the body. Coincidentally, fitness has a direct role in promoting these nine systems!
1. Motion system-bones+joints+muscles
The first debut article mentioned that normal adults have the same number of skeletal joints, basically the same bone shape and the same number of muscles. The difference is muscle circumference and joint angle. Fitness (or other suitable exercise) can increase bone density and promote calcium absorption. Fitness can correct the joint angle, commonly known as-adjusting posture. "Different joint angles have different physical manifestations. For example, some people have bare shoulders and round shoulders, while others have right-angled shoulders; Some people are hunchbacked and ugly, while others are tall and straight with thin legs. Fitness can increase the recruitment of muscles by nerves, increase blood circulation of muscles, improve muscle tension, increase muscle circumference and strength, and maintain a straight posture. " If your body has no wasting disease and you feel bored all over, the basic reason is that the muscle tension is too low, so it's time to exercise.
2. Cardiovascular system-heart+blood vessels
The human heart is a power pump. Every time the heart beats, blood will be transported from the heart to the whole body through blood vessels, and then nutrients and oxygen will be transported to all parts of the body. Long-term fitness (or other suitable exercise) can enlarge the heart cavity and thicken the myocardial wall. Increase myocardial function, increase blood loss per stroke, and increase heart rate reserve. Generally speaking, if your heart rate is too high at rest, it means that your heart function is poor. It can increase the elasticity and reserve capacity of blood vessels and establish collateral anastomosis in time. It can prevent and treat hypertension, delay the progress of atherosclerotic plaque, increase blood flow reserve and play an important role in the rehabilitation of coronary heart disease. ? Exercise according to the doctor's advice when there are symptoms.
3 respiratory system-lung
Human respiration includes external respiration, gas transmission and internal respiration. Oxygen intake and carbon dioxide discharge are carried out through the lungs. The quality of lung function is mainly evaluated by vital capacity. "When alveoli are damaged, such as being invaded by COVID-19, it will lead to insufficient oxygen intake, which will lead to human death. Smoking is harmful to health and can also cause damage to alveoli. Long-term fitness (or other suitable exercise) can have a positive impact on lung function, increase vital capacity, improve oxygen exchange rate, and improve oxygen transport capacity and utilization rate. It is often said that exercise improves cardiopulmonary function, which refers to cardiovascular and pulmonary function. ? Exercise according to the doctor's advice when there are symptoms.
4 Digestive system-stomach+intestine+liver+pancreas
The main function of the stomach is to store food; Intestines are divided into small intestine and large intestine. Small intestine is the main place for digestion and absorption; The large intestine also absorbs water, vitamins and inorganic salts. "Damage to the intestinal mucosa of the large intestine can lead to constipation." The liver is a digestive gland, which can detoxify first and also plays an important role in the digestion and absorption of fat. "Drinking alcohol can damage the liver, fatty liver and make liver function abnormal." The pancreas can secrete digestive juice and hormones. "The common diabetes is pancreatic insulin secretion disorder." Long-term physical exercise (or other appropriate exercise) can improve gastrointestinal peristalsis, digestion and absorption, and also improve the secretion of digestive glands. It can prevent and improve constipation, strengthen the ligament for fixing internal organs, and prevent gastrointestinal prolapse; Exercise can effectively prevent and treat fatty liver; Promote the active rehabilitation of diabetic patients. ? Exercise according to the doctor's advice when there are symptoms.
5 nervous system-brain+spinal cord+cranial nerve+spinal nerve
The whole information of the brain and spinal cord gives instructions, and cranial nerves and spinal nerves are transmitted to all parts of the body through nerve fibers distributed throughout the body, thus completing the regulation of the body. Long-term fitness (or other suitable exercise) can improve the blood supply and oxygen content of the nerve and improve the overall response ability of the nervous system; It can improve the morphological structure and function of the nervous system, promote the regeneration of neurons and nerve fibers, and thus accelerate the transmission of nerve signals. Brain damage and spinal cord damage directly affect the body parts controlled by the damaged area? Exercise according to the doctor's advice when there are symptoms.
6 urinary system-kidney
The main function of the kidney is to discharge the waste and excess water produced by metabolism in the body. Through the ureter to the bladder, and then through the urethra out of the body. Long-term fitness (or other suitable exercise) can have a good influence on the morphological structure and function of the kidney, expel excess water from the body and avoid edema.
Lymphatic system-can produce lymphocytes and participate in immune function.
Fitness (other suitable exercise) can increase the body's immune function.
Endocrine system-it regulates the body by secreting hormones, such as insulin secretion, that is, when the body's blood sugar rises, nerve regulation and body fluid regulation promote insulin secretion and lower blood sugar. If insulin secretion is abnormal, it will develop into diabetes. Fitness (other suitable exercise) can enhance endocrine hormones.
9 Reproductive system-Male reproductive system mainly includes testis, ejaculatory duct, urethra, seminal vesicle, prostate, scrotum and penis. Female reproductive organs mainly include ovary, fallopian tube, uterus and vagina. The improvement of reproductive system function needs the promotion of other systems.
Generally speaking, fitness can improve the external image, reduce the occurrence of common diseases such as intervertebral disc, hip joint and knee joint, and avoid inflammation such as muscle strain; It can improve the internal functions of the body, strengthen the functions of heart, lung, kidney, gastrointestinal tract, nerves and blood vessels, maintain and promote the cell renewal and metabolism of the body, and promote the health of the body; External figure and face value, internal health and knowledge! Whether you choose a spouse or apply for a job, you can improve your social competitiveness. Even if you lie flat, you can feel the care of society.