As we all know, the heart is the most important organ of the human body, which constantly contracts rhythmically, promotes the blood circulation of the whole body, and meets the needs of tissue metabolism of the whole body. If the heart function is abnormal, the organs can't get enough blood supply, and the normal metabolism can't be carried out smoothly, which may affect the labor efficiency, and may cause various physiological obstacles and endanger health. So be sure to protect your heart. However, when people reach middle age, especially from the age of 50, the structure and function of the cardiovascular system are aging to varying degrees. This kind of aging varies greatly from person to person. Some middle-aged people who usually pay attention to physical exercise have no obvious aging phenomenon, and their heart function can be unaffected. Thus, to protect the heart, middle-aged people should first insist on physical exercise and improve the reserve power of the heart. Regular physical exercise can promote the increase of coronary blood flow, vigorous myocardial metabolism and energy intake, thus enhancing myocardial contractility and improving the reserve capacity of the heart. As for the way middle-aged people take part in physical exercise, they should make reasonable arrangements according to their physical condition and work situation. Those who are in good health can participate in track and field, ball games, long-distance running and so on. Those who are in poor health can take a walk, jog, do aerobics and play Tai Ji Chuan. Don't be too active, it is important to stick to it, otherwise it will have no effect.

Then try to avoid some harmful substances from hurting the heart. Most heart diseases are caused by some harmful factors invading the heart. Therefore, middle-aged people should work and rest at ordinary times, be optimistic, and eat reasonably. Eat less animal fat and sugar, control weight, prevent colds and upper respiratory tract infections in time, and avoid viruses and streptococci invading the myocardium. In addition, to maintain good heart function, middle-aged people should also smoke less and not drink too much, because nicotine in tobacco, carbon monoxide inhaled during smoking and strong alcohol will damage myocardial cells, weaken the reserve capacity of the heart and affect heart function.