Once suspected of having coronary heart disease or has been diagnosed with coronary heart disease, not in the strict sense of thorough treatment, there are strict requirements for the exercise mode, two situations are in principle not allowed: 1, climbing, not because the symptoms are aggravated after the increase in climbing exercise, but once the attack at the top of the mountain or hillside, will delay treatment or rescue; 2, swimming, if in the pool water once the disease attack no one present, it is likely In the water inside can not get up, will appear very dangerous situation. Therefore, patients with coronary atherosclerotic heart disease or those suspected of having such disease should avoid the above two situations as much as possible. In general, activities on land are not affected, but the amount of activity must be careful not to exercise too vigorously, because under strenuous exercise myocardial ischemia aggravated, and may even induce an acute attack of coronary atherosclerotic heart disease.