We all know that the frequency of coronary angina attacks is high in the cold winter months. So is it true that angina attacks are rare in the hot summer months? In fact, hot environments also tend to induce angina, especially in hot and humid conditions, and the rate of angina attacks is as high as in winter. This is because heat and humidity make the heart rate increase and the output per beat decrease, plus the hot and humid environment can make the ventricular volume increase, causing myocardial oxygen consumption to increase, making the myocardium ischemic and hypoxic, thus triggering angina pectoris. Coronary heart patients in the hot summer should pay attention to: 1, exercise exercise exercise is appropriate in the early morning when it is cooler, do not exercise in the hot sun. In the hot and humid conditions before the arrival of thunderstorms, attention should be paid to appropriate rest or maintain a quiet state. 2.Prevent heatstroke and cool down Pay attention to heatstroke and cool down, when outdoor activities or labor, you should wear a sun hat and prepare enough water to prevent the peripheral vasodilatation, insufficient blood volume and make the coronary artery blood supply decrease, myocardial ischemia and induce angina. 3, the preparation of drugs Patients with a history of angina attacks can be used prophylactically, such as the heart, heartburn Danshin tablets, etc., if you travel must carry anti-angina drugs such as nitroglycerin or isoamyl nitrite.