The so-called bad heart refers to coronary heart disease! Traditional Chinese medicine is called chest pain and joint pain. Coronary heart disease is also light and heavy. When the coronary artery is blocked to 50%, most people still have no feeling. People can still run at this time. When the blood vessels are blocked to more than 70%, most people will have chest tightness, palpitation, shortness of breath, listlessness and mild angina pectoris. Running is not recommended at this time, and you can walk freely. When the coronary artery is blocked to 90%, you can't run, especially in cold winter, it is easy to have acute myocardial infarction and lose your life. This is no joke.
Therefore, if you have a slight heart disease, you can still run. As long as there is no problem, run. But for moderate heart disease, you can jog. For moderate or above heart disease, don't run, you can avoid danger by walking.