Sweating is usually enough for about 20 minutes to half an hour. When you sweat a lot, you sweat a lot because the air is confined and also suffocating, which is very bad for the coronary arteries and the anterior and posterior circulation of the brain. If excessive sweating causes insufficient perfusion, once the coronary arteries of the heart become ischemic, if there are previous risk factors, it will cause an increase in blood pressure and vasospasm, which can lead to acute coronary heart infarction or new acute cerebral infarction in the anterior and posterior cerebral arteries, or even cerebral hemorrhage. Because of the overheated environment, there are some elderly people who have their own risk factors that can easily induce acute cardiovascular and cerebrovascular disease in certain environments, so it is important to note that the sweat should not be too long, and to drink more water while sweating to ensure adequate cardiovascular and cerebrovascular perfusion.