Angina pectoris is a clinical syndrome caused by acute, transient ischemia and hypoxia of the myocardium due to insufficient blood supply to the coronary arteries, with episodes of retrosternal or precordial pain as the main manifestation. Some patients have no problem with inactivity, but when they move their chest, it hurts, and we call this kind of chest pain – exertional angina. What is exertional angina? Exertional angina is angina induced by exercise or other conditions that increase the oxygen demand of the heart muscle. When a person performs physical activities (such as running, cycling, lifting heavy objects, going up stairs, etc.), the oxygen demand of the myocardium increases, and when this is combined with insufficient blood supply to the coronary arteries, chest pain occurs, which is called “exertional angina. In layman’s terms, it means that if you let the cattle plow the ground without letting them eat grass, then problems are bound to occur. Exertional angina can be divided into primary exertional angina, stable exertional angina and worsening exertional angina. Among them, stable exertional angina is the most common kind of angina, chest pain attacks have clear exertional or emotional triggers, each attack, chest pain time is relatively fixed, the degree of pain also varies little. Chest pain can be relieved rapidly after rest or containing nitroglycerin. This condition has been stable for more than 1 month is called “stable exertional angina”. How to prevent exertional angina? After understanding what is exertional angina, what we have to do is to actively prevent it in our normal life and try to avoid the occurrence of the disease. First, to smooth the mood. Patients should maintain an optimistic state of mind and treat the disease correctly. To eliminate unnecessary anxiety and fear, avoid bad mental stimulation, and cultivate optimism. Those who have their first attack or whose seizures suddenly become frequent and aggravated should take a short rest and convalesce in a quiet environment. Secondly, it is necessary to adapt the work and rest. Work should be properly arranged to prevent excessive mental stress and heavy physical labor. Ensure sufficient sleep time. Avoid too fast or sudden forceful movements in daily life, such as catching a bus or walking fast and for a long time. In any case when there is an angina attack, stop the activity immediately and rest quietly. Finally, the diet should be adjusted. Patients in the diet must limit animal fat and cholesterol-rich food, obese people should gradually reduce weight; to avoid a meal too full, dinner as little as possible; tea and a small amount of coffee, if not cause obvious excitement or insomnia, can be consumed in small amounts; a small amount of non-potent alcohol is also harmless, may help to dilate blood vessels and sedative effect; quit smoking or minimize smoking.