Increase myocardial strength
Physical exercise can enhance myocardial strength and make myocardial contraction strong, thus increasing the stroke output, which can be increased from 60 ml of blood per stroke to more than 90 ml. In this way, when the cardiac output per stroke increases, the heart rate slows down correspondingly in a quiet state, the working reserve capacity of the heart is enhanced, and the physical strength and endurance of the body are increased.
Improve metabolism
During exercise, metabolism and energy consumption in the body increase, which enhances gastrointestinal peristalsis, increases digestive secretions, improves digestion and absorption ability, increases appetite, and is beneficial to children's growth and development.
Improve physical quality
Exercise can promote the improvement of physical fitness and athletic ability, that is, strength, endurance, speed, agility and flexibility, as well as the ability to walk, run, throw and climb.
Promote bone development
Through physical exercise, muscle fibers become thicker and myoglobin, which stores oxygen in muscles, increases, thus making muscles adapt to intense work. Exercise can also make bones develop.
Exercise one's will
Physical exercise can cultivate people's strong and brave character, make people energetic and happy, improve their disease resistance, enrich their lives, delay aging and prolong their lives.
Enhance lung reserve capacity
Physical exercise can promote vital capacity, enhance the development of respiratory muscles, deepen the breathing range, reduce the corresponding breathing frequency, and enhance the lung's reserve capacity and adaptability.
Improve reaction sensitivity
Physical exercise can enhance the sensitivity of reaction, make people move quickly and harmoniously, adjust muscles and nerves perfectly and accurately, increase the reaction speed of activities, and improve the accuracy of body balance and orientation. Physical exercise can also improve sleep quality and work and study efficiency.
Because exercise can develop muscles, burn excess fat to lose weight, and also make thin people plump, so insisting on physical exercise can make them fit.