Modern medical research has proved that exercise is a physical activity under the command of the brain, and the brain is stimulated by nerve endings from muscles and joints, so exercise can regulate the activities of the nervous system and enhance the excitement and inhibition process of the cerebral cortex. Exercise can not only strengthen myocardial fibers, strengthen myocardial contraction, improve myocardial oxygen supply, but also prevent cholesterol from depositing in blood vessels, which can effectively prevent arteriosclerosis, hypertension and coronary heart disease.
Exercise can increase breathing difference, increase vital capacity, make gas exchange fully, increase oxygen content in blood and accelerate metabolic process. Exercise can also strengthen the peristalsis of the digestive tract and the secretion of digestive glands, improve the blood circulation of the gastrointestinal tract, and be conducive to the digestion of food and the full absorption of nutrients. Regular exercise can also strengthen the bones of the elderly, bear greater pressure and tension, strengthen joints, strengthen muscle fibers, and enhance elasticity, patience and flexibility.