One: A 46-year-old man, whose physical function is in a period of gradual decline, should take proper physical exercise. The advantages of running are: 1, improving sleep quality. By running, the amount of blood supply and oxygen supply to the brain can be increased by 25%, so the quality of sleep at night will also be improved. 2. "Ventilation" During running, the average vital capacity increased from 5.8 liters to 6.2 liters, and at the same time, the oxygen-carrying capacity in the blood also increased greatly. 3. The "pumping" force is greatly increased. During exercise, the frequency and efficacy of heart beating are greatly improved, and the heartbeat, blood pressure and elasticity of blood vessel wall are also increased. 4, promote health, running can promote the production of white blood cells and pyrogens, and can eliminate many viruses and bacteria in our body. 5. Keep steady and jog regularly, the anti-injury ability of tendons, ligaments and joints will be strengthened, and the chances of sports injuries will be reduced. At the same time, skin, muscles and connective tissue can also become stronger. 6. Eliminate tension. Jogging can inhibit the secretion of adrenaline and cortisol, two hormones that cause tension, and release endorphins that make people feel relaxed. 7. Stay young. Regular exercise can increase the secretion of growth hormone HGH and delay aging. 8. Store energy. Through running, the storage of muscle glycogen increased from 350g to 600g, and the number of mitochondria also increased. 9. shaping. By running, men can reduce their body fat by 6%- 13%.

Two: Adult men aged 40 to 50 should do more physical and mental exercises at ordinary times to avoid aging and blockage of blood vessels and cause various diseases. Physical exercise can improve immunity and resistance, and enhance physical fitness.